ISTANBUL — Turkish lawmakers are wrapping up political campaign events in Europe ahead of a referendum on expanding the powers of the country’s president, in a move that could reduce tensions after a dispute with some European nations.

Dutch and German restrictions on Turkish officials who have tried to campaign for diaspora votes on the constitutional referendum angered Turkish President Recep Tayyip Erdogan, who compared the two European countries to the Nazi regime.

European leaders, in turn, denounced Erdogan’s remarks.

‘‘It is just that with the closing of Parliament, the representatives will be heading to their districts, everyone will primarily be working at their electoral districts,’’ an official of Turkey’s ruling Justice and Development Party said Tuesday by telephone from party headquarters in Ankara, the capital.

The official, who spoke on condition of anonymity, said the decision has nothing to do with the animosity between European nations and Turkey.

‘‘Foreign election coordination centers will be continuing their operations,’’ the official said, adding that previously scheduled rallies could still take place in Europe.

Kurdish celebrations of springtime on Tuesday mixed peacefully with protests against expanding the presidential powers.

Thousands celebrated the Newroz festival in Istanbul and in Diyarbakir, a mainly Kurdish city in a region where Kurdish militants regularly clash with government forces. Many flags proclaimed ‘‘No’’ in the Turkish and Kurdish languages, referring to Erdogan’s bid to gain more power for his office in an April 16 referendum.

Associated Press