Classical evangelicalism already represented a particular reshaping of Protestant Christianity. It placed exceptional emphasis upon:

• personal conversion or being “born again”;
• the saving power of Christ’s death;
• the supreme authority of the Bible;
• active evangelism;
• an individual relationship with Jesus.

These emphases were not inventions, but they selected certain strands of the New Testament and Reformation tradition and made them the centre of Christianity.

Contemporary American evangelicalism has added further layers that are neither inevitable nor universally evangelical:

• biblical inerrancy, often extending beyond religious teaching into history and science;
• dispensational prophecy, the Rapture and an elaborate timetable for the end of the world;
• unwavering support for Israel as part of that prophetic scheme;
• the prosperity gospel in some churches;
• the identification of personal wealth and national power with divine favour;
• opposition to abortion, homosexuality and changing gender roles as defining tests of Christian fidelity;
• the idea that the United States has a special covenant or destiny under God;
• increasingly, the fusion of Christianity with Republican and Trumpist political identity.

The last development is particularly significant. Recent surveys show that white evangelical Protestants are now the American religious group most inclined to favour a privileged political position for Christianity. PRRI’s 2025 data classified 67 per cent of white evangelical Protestants as adherents or sympathisers of Christian nationalism; Pew likewise found them especially likely to favour biblical influence upon legislation and an officially Christian national identity. (PRRI)

Public Religion Research Institute—a non-profit, non-partisan American organisation that surveys attitudes at the intersection of religion, culture and politics

So the movement has not merely produced another interpretation of Christian belief. In many places it has created a compound religion:

Christian salvation theology + biblical literalism + American exceptionalism + conservative social morality + apocalyptic expectation + political nationalism.

This is analogous to the earlier development we have been discussing. Just as Greek philosophy supplied concepts through which the early Church reformulated Jesus, modern America has supplied its own conceptual materials: individualism, capitalism, frontier mythology, nationalism, racial history, mass entertainment and electoral politics. Christianity has absorbed them and then presented the resulting mixture as original biblical truth.

There is, however, an important qualification. American evangelicalism is not one homogeneous body. There are evangelicals who reject Christian nationalism, prosperity teaching, Trumpism and political domination. Black evangelical traditions, progressive evangelicals, Anabaptists and many individual conservative Christians cannot simply be placed in the same category.

Nevertheless, its dominant public form may reasonably be described as a further stage in Christianity’s historical elaboration. It is not the Christianity of Jesus, Paul, Nicaea, medieval Catholicism or Luther—although it claims continuity with all of them. It is Christianity refracted through the peculiar history and anxieties of the United States.

I might put the conclusion rather sharply:

American evangelicalism is not primitive Christianity preserved unchanged. It is one of Christianity’s most modern and culturally specific constructions—an ancient salvation story rewritten in the language of American identity, power and fear.

It is best understood as a succession of developments rather than one sudden corruption of an otherwise unchanged faith. The decisive point is that three histories must be distinguished:

1. evangelical Christianity as a religious tradition;
2. the American Religious Right as a political coalition;
3. Christian nationalism as the belief that the United States properly belongs to Christianity and should be governed accordingly.

They overlap considerably, but they are not identical.

1. The eighteenth-century evangelical beginning

American evangelicalism emerged from the Great Awakening of the 1730s and 1740s, itself part of a wider revival movement embracing Britain and the American colonies. Its central claim was that inherited church membership was insufficient: every person needed an inward experience of conversion—the “new birth.” Preaching, emotional conviction, personal testimony and conscious acceptance of salvation became more important than sacrament, ecclesiastical authority or theological learning. (The Library of Congress)

This already suited the developing American environment. Religion became something that individuals could choose, experience and proclaim. The successful preacher was not necessarily the person with the highest ecclesiastical office, but the person who could command a crowd and produce conversions.

The movement therefore contained, almost from the beginning, several characteristically American elements:

• religious individualism;
• suspicion of established authority;
• competitive churches;
• charismatic popular preaching;
• the conviction that a transformed individual could begin life again.

It was Christianity adapted to a mobile, expanding and increasingly democratic society.

2. Revivalism becomes the religion of the new republic

The Second Great Awakening, beginning around 1800 and flourishing during the early nineteenth century, carried evangelicalism far beyond its earlier denominational base. Camp meetings, travelling preachers and mass conversions spread across the expanding frontier. The Library of Congress describes evangelicalism between 1800 and the Civil War as the “grand absorbing theme” of American religious life. (The Library of Congress)

This period added another important idea: conversion was not merely the rescue of an individual soul. Converted people could perfect society. Evangelicals became active in temperance, missions, education, prison reform and the abolitionist movement.

Yet the tradition divided profoundly over slavery. Northern and Southern Baptists, Methodists and Presbyterians separated. In the South, biblical authority was used to defend slavery and later segregation; in the North it could be used to condemn them. Thus “the Bible alone” did not produce one political conclusion. It allowed rival communities to portray their own social order as divinely sanctioned.

The American Civil War consequently left behind two powerful legacies:

• the belief that the nation had a providential destiny;
• a Southern white Protestant culture in which church, race, region and social authority were closely interconnected.

3. Fundamentalism: 1870s–1920s

Late nineteenth-century evangelicalism faced Darwinism, biblical criticism, industrialisation, immigration, Catholic expansion and the increasingly secular university.

Conservative Protestants responded by defending certain non-negotiable “fundamentals”:

• biblical inspiration and increasing claims of inerrancy;
• the Virgin Birth;
• Christ’s substitutionary atonement;
• bodily resurrection;
• miracles and the Second Coming.

The term fundamentalist was coined in 1920 for evangelicals prepared to fight publicly for these doctrines. (OUP Academic)

At approximately the same time, a highly influential literal interpretation of biblical prophecy spread through prophecy conferences, annotated Bibles and Bible institutes. It divided history into successive stages of God’s dealings with humanity and interpreted contemporary events as signs of an approaching apocalypse. This supplied American Protestantism with much of its later preoccupation with:

• the Rapture;
• Antichrist;
• the restoration of Israel;
• Armageddon;
• an imminent end of history.

After public defeats such as the 1925 Scopes trial, fundamentalists appeared to withdraw from national cultural leadership. But they did not disappear. They created an alternative institutional world: Bible colleges, seminaries, radio stations, publishing houses, missionary organisations and independent churches.

That parallel culture was crucial. It meant that conservative Protestants could live inside a nearly complete intellectual and social environment of their own.

4. Neo-evangelicalism: 1940s–1960s

During the 1940s, leaders including Harold Ockenga and Billy Graham attempted to escape fundamentalist isolation without abandoning conservative theology. The National Association of Evangelicals was founded in 1942, and the resulting movement was commonly called neo-evangelicalism. (nae.org)

Neo-evangelicals embraced:

• modern mass communication;
• universities and scholarship;
• national organisations;
• respectable public engagement;
• anti-communism;
• large-scale evangelistic campaigns.

Billy Graham was especially important. His crusades placed evangelical Christianity at the centre of post-war American public culture, while his relationships with presidents strengthened the impression that evangelical Protestantism and American national purpose naturally belonged together.

This was also the age of radio and television preaching. The preacher became a national celebrity, supported directly by an audience rather than controlled by a local congregation or denominational hierarchy. The later megachurch, televangelist and religious media personality emerged from this structure.

5. Cold War Christianity and American exceptionalism

The Cold War intensified the fusion. The United States defined itself against officially atheistic communism. “Under God” was added to the Pledge of Allegiance in 1954, and “In God We Trust” became the official national motto in 1956.

This did not yet amount to the contemporary Religious Right. Democrats and Republicans both used religious language, and many evangelicals remained politically diverse. Jimmy Carter, an openly “born-again” Southern Baptist, was elected president as a Democrat in 1976.

Nevertheless, the Cold War strengthened a national mythology:

America was free because it was Christian; communism was tyrannical because it was godless; American power therefore served a providential purpose.

Capitalism, anti-communism, family order and Christianity were increasingly treated as parts of one moral system.

6. Race, segregation and the Southern political realignment

The civil-rights era is indispensable to the story. Many white Southern churches resisted integration, sometimes actively and sometimes through the language of local control, personal conversion and gradual change. Evangelical approaches often treated racism primarily as an individual sin rather than a structure requiring federal intervention. Academic research identifies this racial history as an important component in the development of modern religious conservatism. (cambridge.org)

As the national Democratic Party embraced civil-rights legislation, large numbers of white Southern voters gradually moved toward the Republican Party. This was not an instantaneous or exclusively religious realignment, but evangelical churches supplied social networks, language and institutions through which it could be consolidated.

The rise of private Christian schools after desegregation was also significant. Some were founded for genuinely educational or theological reasons; others preserved segregated environments. Disputes over federal tax exemptions for racially discriminatory schools helped convince conservative Christian leaders that government threatened their institutional autonomy.

This background complicates the familiar claim that the Religious Right arose simply because of Roe v. Wade. Abortion became its most powerful unifying issue, but the mobilisation also grew from battles over desegregation, feminism, school prayer, sexual morality, taxation and control of Christian institutions.

7. The Religious Right: 1970s–1980s

The decisive organisational stage came during the late 1970s.

Jerry Falwell’s Moral Majority, founded in 1979, brought conservative pastors and congregations into coordinated electoral politics. Its programme combined opposition to:

• abortion;
• feminism and the Equal Rights Amendment;
• homosexuality;
• pornography;
• secular education;
• restrictions upon Christian schools.

“Family values” transformed a collection of anxieties into a coherent political identity. Scholarly work shows that abortion, feminism and gay rights became nearly universal elements of the Christian Right’s agenda. (cambridge.org)

Ronald Reagan’s election in 1980 completed the alliance. White evangelicals became a major Republican constituency. In return, Republican politicians adopted evangelical language, judicial priorities and social policies.

At this point, evangelical began to function in two ways:

• as a theological identity;
• as a social and electoral identity.

A person might be called evangelical because he believed that each individual must consciously turn to Christ, accept salvation and undergo a personal religious conversion—or because he belonged to the white conservative Republican cultural bloc.

8. Televangelism, megachurches and religious consumer culture

From the 1970s onward, television, direct-mail fundraising and later cable and digital media created enormous religious organisations centred upon individual personalities.

The church increasingly resembled a consumer institution:

• charismatic chief executive or pastor;
• branded teaching;
• music and spectacle;
• extensive merchandising;
• therapeutic advice;
• political mobilisation;
• little effective external accountability.

The prosperity gospel developed especially strongly in this environment. It promised that faith, positive confession and financial giving could produce health, success and wealth.

Prosperity teaching should not be confused with all evangelical Christianity. Many evangelicals reject it. Nevertheless, it represents an exceptionally clear adaptation of Christianity to American commercial culture: divine favour becomes measurable through personal success.

9. Israel, prophecy and foreign policy

The creation of Israel in 1948, and especially its victory in 1967, were interpreted by many American evangelicals as fulfilments of biblical prophecy and evidence that history was moving towards the return of Christ and the final events described in Revelation.

After 1967, conservative evangelical support for Israel became increasingly connected to an apocalyptic account in which Jewish restoration to the Holy Land precedes Christ’s return. From the 1970s onward, evangelical Christian Zionism merged with the broader Christian Right and became a politically organised force. (OUP Academic)

This is another example of doctrine becoming political policy. Support for a modern state is treated not merely as a strategic judgement but as obedience to a prophetic timetable.

10. From the Moral Majority to permanent Republican infrastructure

The Moral Majority, founded by the Baptist preacher Jerry Falwell in 1979, was a conservative Christian political organisation that mobilised evangelical voters around issues such as abortion, school prayer, homosexuality and support for the Republican Party. Although it formally dissolved in 1989, its functions were inherited by organisations such as the Christian Coalition, Focus on the Family, the Family Research Council and numerous state-level groups.

During the 1990s and early 2000s, evangelical political activity became increasingly professional and systematic:

• church membership lists were turned into voter-contact networks;
• pastors distributed election literature and used congregations to mobilise voters—conduct that would be highly controversial, and potentially contrary to charity rules, in Britain;
• the appointment of conservative judges became a central objective;
• opposition to abortion provided lasting organisational unity;
• resistance to same-sex marriage became a major national campaign;
• religious radio, television and publishing developed into a largely self-contained political information system.

The administration of George W. Bush gave evangelicals extraordinary access to national government. Bush’s own conversion testimony and language of good and evil fitted comfortably within evangelical culture, particularly after the attacks of 11 September 2001.

11. Obama and the politics of cultural displacement

Barack Obama’s presidency intensified the sense among many white evangelicals that the country was being taken away from them. As the first Black president, elected by an increasingly diverse and socially liberal coalition, he personified the decline of white Protestant cultural dominance. His support for abortion rights, same-sex marriage, religious pluralism and a larger federal role reinforced the belief that traditional Christian America was being displaced by a secular, multicultural order.

• the election of the first Black president;
• demographic decline in the white Christian share of the population;
• same-sex marriage;
• increasing visibility of secularism;
• changing gender and racial norms;
• immigration;
• loss of evangelical authority in schools, media and professional life.

Political disagreement therefore became an existential narrative. The question was no longer merely, “Which policies should the government pursue?” It became:

“Who owns America, and are people like us being displaced?”

That is the bridge from conventional religious conservatism to Christian nationalism.

12. Trump: from moral exemplar to appointed instrument

Donald Trump presented an obvious problem for evangelical moral teaching. His behaviour and public character bore little resemblance to the personal morality evangelicals had demanded of earlier politicians.

Yet the majority of white evangelicals treated him not as a moral example but as an instrument through whom God might accomplish his purposes: appointing conservative judges, restricting abortion, defending Israel, protecting Christian institutions and restoring their cultural authority. Some compared him to Cyrus, the pagan ruler used by God in the Hebrew Bible. Trump’s moral character could therefore be discounted precisely because divine providence was said to work through flawed and even irreligious men. In effect, political success became evidence of divine favour, while Christian morality ceased to be the standard by which the chosen instrument was judged:

• he promised anti-abortion judges;
• defended conservative Christian institutions;
• recognised Jerusalem as Israel’s capital;
• attacked liberal elites and the mainstream press;
• portrayed Christians as an injured and threatened people;
• promised restoration of a supposedly lost America.

The logic shifted from personal holiness to political combat. A flawed ruler could be compared with Cyrus, the pagan Persian king whom God used for divine purposes.

This was not a marginal electoral phenomenon. Pew’s validated-voter study found that 81% of white evangelical Protestant voters supported Trump in 2024, almost unchanged from 83% in 2020. (pewresearch.org)

Trump did not create the alliance. He revealed how far it had already evolved. He also removed many of its remaining inhibitions about power, resentment and authoritarian leadership.

How widespread is evangelical Christianity in the United States?

Here the definitions matter enormously.

Evangelical Protestantism broadly

Pew’s 2023–24 Religious Landscape Study found that 23% of American adults identify with evangelical Protestant churches. That is a very large population—roughly one adult in four—but lower than the 26% measured in 2007. (pewresearch.org)

It is geographically concentrated:

• 52% of evangelical Protestants live in the South;
• 21% in the Midwest;
• 19% in the West;
• only 9% in the Northeast. (pewresearch.org)

In Mississippi, for example, evangelical Protestants constitute about 42% of adults. (pewresearch.org)

Evangelical Protestantism is also not exclusively white. Pew estimates that its adherents are approximately 70% white, 12% Hispanic and 7% Black, although historically Black Protestant churches are usually analysed separately because of their distinctive history and politics. (pewresearch.org)

Christian nationalism

Christian nationalism is narrower than evangelicalism but extends beyond it.

PRRI measures it through statements such as whether:

• the US government should declare America a Christian nation;
• US laws should be based on Christian values;
• being Christian is important to being truly American;
• God has given America a special role;
• Christians should exercise dominion over society.

Its 2025 survey classified approximately 26% of Americans as Christian-nationalist “adherents” or “sympathisers.” Support was greatest in the South and Midwest but present in every state. (PRRI)

Among white evangelical Protestants, the proportion was 67%. Among Hispanic Protestants it was 54%. Those were the only two major religious categories in which a majority qualified as adherents or sympathisers. (PRRI)

That does not mean that 67% favour dictatorship or violence. PRRI’s category combines stronger adherents with less thoroughgoing sympathisers. Nor does it mean that every person who agrees that America has a Christian heritage wants a theocratic state.

But it does show that the fusion of Christianity and national identity is not a fringe belief within white evangelicalism. It is now close to its centre of gravity.

Political power exceeds numerical size

Evangelicals comprise 23% of adults, but their influence is greater because:

• they vote at high rates;
• they are geographically concentrated in Republican states and districts;
• churches provide ready-made organisational networks;
• they vote with unusual cohesion;
• their priorities strongly influence Republican primary elections;
• they have pursued judicial appointments consistently for decades.

White evangelical Protestants constituted 29% of Trump’s 2024 voters, even though they form a much smaller share of the entire population. (pewresearch.org)

Thus they are not a national majority, but they are a disciplined and indispensable part of one of the two principal political coalitions.

How widespread is the American form outside the United States?

Evangelical Christianity is global; the specifically American political compound is less uniformly so.

The World Evangelical Alliance says its affiliated national alliances and churches represent more than 600 million evangelicals in 143 countries, although such figures depend heavily upon how “evangelical” is defined and should be treated as organisational estimates rather than a census. (WEA Secretary General)

The strongest growth is now in the Global South, especially:

• sub-Saharan Africa;
• Latin America;
• parts of East and Southeast Asia.

Older Pew research estimated that sub-Saharan Africa contained the largest share of the world’s evangelicals, while Pentecostal and charismatic Christianity had hundreds of millions of followers worldwide. (pewresearch.org)

American influence has spread through:

• missionaries;
• Bible colleges;
• televangelism;
• Christian broadcasting;
• worship music;
• prosperity-gospel ministries;
• translated books;
• social media;
• anti-abortion and anti-LGBTQ campaigning;
• Christian Zionist organisations.

But the result is not simply an American copy. Churches in Brazil, Nigeria, South Korea, Guatemala or Uganda adapt evangelicalism to local histories, ethnic relations, economic conditions and political ambitions. Indeed, many of the largest movements are now indigenous and export missionaries themselves. (pewresearch.org)

Certain features travel especially well:

• supernatural healing;
• spiritual warfare;
• prosperity teaching;
• strong male pastoral authority;
• opposition to sexual liberalisation;
• the promise of personal transformation;
• alliance with populist political leaders.

Other distinctly American features—the appointment of judges committed to interpreting the Constitution according to its original historical meaning, the Second Amendment, nostalgia for the American Founding Fathers—obviously do not transfer directly.

What does transfer is the underlying pattern:

A revivalist Christianity joins itself to national grievance, promises moral restoration and presents a strong political leader as the defender or instrument of God’s people.

That pattern can be seen in parts of Latin America, Africa, Eastern Europe and Asia, but it is not universal among evangelicals in any of those regions.

The paradox

American evangelicalism is therefore simultaneously declining and powerful.

Its proportion of the American population has fallen modestly, and Christianity overall has declined from 78% of adults in 2007 to 62% in 2023–24. (pewresearch.org) Yet the most politically mobilised evangelical sector has acquired exceptional influence over:

• the Republican Party;
• the federal judiciary;
• abortion law;
• education policy;
• policy towards Israel;
• questions of sexuality and gender;
• the language in which American national identity is debated.

Its increasing militancy may partly arise from that demographic decline. A secure majority can tolerate pluralism; a group that remembers being dominant but senses itself losing control may become more determined to use political power while it still possesses it.

Eighteenth-century evangelicalism made Christianity a personal conversion. Nineteenth-century revivalism made it an engine of national reform. Fundamentalism made it a fortress against modernity. Neo-evangelicalism returned it to public respectability. The Religious Right made it a Republican constituency. Christian nationalism has increasingly made the possession and restoration of America itself part of the faith.

This politicised form of white evangelicalism is organised and influential enough to dominate the Republican Party, but it represents neither all American Christians nor a majority of Americans. Its power rests less on numbers than on disciplined voting, strong institutions and strategic access to political power.

Yet the ethical teaching of the Gospels is easier to understand than the elaborate theological structure later erected upon it. That accumulated spiritual patina has enabled Christianity to be repeatedly reshaped in support of the doctrine, morality or political interest of the day. The devil, after all, can quote Scripture for his own purposes.

It is telling that many of Christianity’s defining doctrines were inferred from Paul and later ratified by councils, rather than drawn directly from the recorded teaching of Jesus. The councils concentrated increasingly upon what Jesus was, while the Gospels are concerned more immediately with what he proclaimed and how he called people to live. The Gospels themselves are later interpretations, not verbatim records; nevertheless, anyone seeking the teaching of Jesus rather than the theology constructed around him must begin there.