The Netherlands is one of the most secular countries in the world. In a 2022 survey, 57 percent of its people reported “no religion,” 18 percent Catholicism, thirteen percent Protestant Christianity, and 5.6 percent Islam. Many of those who profess Christianity, moreover, are not very religious. In 2015, 82 percent of the Dutch population indicated that they “never or almost never” set foot in a church. But despite such widespread secularism, religion plays a significant role in Dutch politics. Three of the 15 parties in the country’s parliament officially signal their Christianity and another has roots in Christian democracy. Such a seeming discrepancy calls for further analysis.
Historically, the Dutch people were often noted for their religiosity. In the fourteenth and fifteenth centuries, they formed the core group of the influential Devotio Moderna movement that sought to revitalize Christianity through devotion to piety, humility, and simplicity of life. Learning was important as well, as exemplified by Erasmus of Rotterdam. In the mid-sixteenth century, conversion to Calvinism, or Reformed Christianity, was widespread, especially in Holland and Zeeland. This religious change helped spark rebellion against Spanish rule and the creation of the Dutch Republic in 1579. Although the Dutch Republic was noted for its religious toleration, it was closely associated with Calvinism, which continued to spread across its seven constituent provinces (Holland, Zeeland, Utrecht, Friesland, Groningen, Overijssel, and Gelderland). Territorial gains made with the Peace of Westphalia (1648) brought substantial Catholic territories into the republic, most notably in North Brabant, which were long ruled on a semi-colonial basis. As the intensity of Dutch Protestantism declined in the nineteenth century, religion conflict intensified, pitting Catholics, Calvinists, and post-Calvinists against each other. The main response was the “pillarization” of Dutch society, defined as the “the vertical separation of citizens into groups by religion and associated political beliefs.” By the beginning of the twentieth century, four main pillars had crystalized: Catholic, Protestant, Liberal, and Socialist. As Wikipedia notes:
Each pillar [had] its own social institutions and social organizations. These [included] its own newspapers, broadcasting organisations, political parties, trade unions, farmers’ associations, banks, stores, schools, hospitals, universities, scouting organisations and sports clubs. Such segregation [meant] that many people [had] little or no personal contact with members of other pillars. [Note: quotation edited to put it in the past tense.]
Depillarization began after World War II, but remnants persist, especially in education. The Netherland’s several Christian political parties might also be seen a holdover of the pillarization era, although some of their sectarian lines have blurred over time. The Christian Union party is rooted in the Reformed Church and thus takes a conservative stance on social matters, but it now leans to the left on economic and environmental issues, based on the Biblical precepts of charity and stewardship. The somewhat more conservative Christian Democratic Appeal originated in 1977 through the confederation of three religious-political groups, two Protestant and one Catholic. The third explicitly religious party, the Reformed Party (SGP), represents unreconstructed Calvinism and is decidedly rightwing. It is sometimes even regarded as advocating theocracy, although that allegation is controversial. SGP is the Netherland’s oldest political party, having been established in 1918. One of its founders envisioned a Netherlands “without cinema, sports, vaccination, and social security.” While the antipathy to sports has dissipated, opposition to playing games on Sundays has not.
Although religious affiliation has declined more sharply in the traditionally Protestant parts of the Netherlands than in the traditionally Catholic ones (see the first map below), intense religiosity is more common in the former region. The Old Reformed (strictly Calvinist) congregations have a membership of roughly 400,000, although some sources claim that over a million Dutch people remain affiliated with their version of the Reformed faith. Staunch believers are concentrated in a discontinuous “Bible Belt” that stretches from Zeeland in the southwest to the Netherlands’ center-north. It is often mapped based on support for the Christian Union and Reformed parties (see the map below). Intriguingly, the Dutch Bible Belt is located just north of the historical divide between the Protestant and Catholic parts of the country. This distribution pattern has been used as evidence that the Netherlands’ Bible Belt originated from Protestant stalwarts fleeing Catholic domination before the Peace of Westphalia in 1648, but this interpretation remains uncertain.
In the 2023 general election, the (Calvinist) Reformed Party had its best showing by a wide margin in Zeeland, where it took almost 10 percent of the vote. But it came in first place in only one of the Zeeland’s municipalities. Nationwide, it did so in eight of the 342 municipalities into which the Netherlands is divided. Rather than forming a contiguous belt, these municipalities are widely scattered. One lies in the country’s demographic core (Woudenberg in Utrecht Province) and another, Urk, is found in Flevoland, a land that did not even exist until it was diked and drained in the 1950s and ‘60s. As a new province, it might seem surprising the Flavoland would be home to such a traditional community. But Urk is an old fishing town that sat on an island before the massive drainage projects of the mid twentieth century. It is often regarded as the country’s most conservative municipality. Its politics have long been dominated by Christian parties, particularly the SGP and local offshoots, although in recent years the right-populist PVV and FvD have gained considerable support. The 21,000 residents of Urk have also maintained their own distinct dialect, usually called Urkers As noted in Wikipedia article on Urk:
One of the oldest and most distinctive dialects of Dutch is the language spoken in Urk. Nearly everyone in the village speaks this dialect and uses it in daily life. The dialect deviates considerably from contemporary standard Dutch and has preserved many old characteristics that disappeared from standard Dutch a long time ago. The Urkish dialect also includes elements that are older than standard Dutch and were never part of the standard language. … The dialect developed this way because until World War II, Urk was an island and could only be reached by boat. Radio was unknown, and the poor population did not have much money for newspapers and books. Until the modern era primary education for the children typically lasted only two years; afterwards children had to help maintain the family and formal schooling ended.
The hardline Calvinist communities in the Bible Belt have been subjected to harsh criticism in mainstream Dutch society. Opposition to vaccination has long generated opposition. Recent censure often focuses on their steadfast hostility to gay rights and gender ideology.
The deep conservatism of old-school Dutch Calvinism is politically reflected in places far from the Netherlands, most notably among the Afrikaners of South Africa. It can also be seen in the United States, particularly in a few counties in southwestern Michigan and northwestern Iowa that were heavily settled by Dutch immigrants. This correlation can be seen in the paired maps posted below, one showing the prevalence of the (Dutch) Reformed Church in Iowa and the other showing the results of the 2020 presidential election in the same state. Donald Trump is anything but a reflection of Calvinist values, but the overwhelming support that he received in northwestern Iowa does indicate an abiding hostility to liberalism and leftism in this region that has deep roots in the Dutch Reformed Church.
As a final note, it is intriguing that the centrist Christian Union party had by far its best showing in the 2023 general election in Bonaire and the two other special Dutch municipalities located in the Caribbean.