The North Carolina Republican Party voted unanimously on Monday to censure Senator Richard M. Burr for voting to convict former President Donald J. Trump in his second impeachment trial.
The rebuke was the latest fallout for the seven Republicans who sided with Democrats in an unsuccessful effort to find Mr. Trump guilty of inciting an insurrection on Jan. 6, when a mob of Trump supporters rampaged through the Capitol.
The vote by Mr. Burr, 65, who will retire after three terms in the Senate, came as a surprise after he had earlier voted against moving forward with the impeachment trial because of a Republican challenge that the Senate lacked jurisdiction to try a former president.
The North Carolina Republican Party said in a statement on Monday that the decision to censure Mr. Burr had been made by its central committee.
The party “agrees with the strong majority of Republicans in both the U.S. House of Representatives and Senate that the Democrat-led attempt to impeach a former president lies outside the United States Constitution,” the statement said.
Mr. Burr released a brief statement in response saying that it was a “truly sad day” for Republicans in his state.