House Republicans chose and then quickly repudiated yet another of their nominees for speaker on Tuesday and rushed to name a fourth, pressing to put an end to a remarkable three-week-long deadlock that has left Congress leaderless and paralyzed.
Representative Mike Johnson, a little-known social conservative from Louisiana, emerged on Tuesday night as the latest contender for the post after Representative Tom Emmer of Minnesota, the No. 3 House Republican, dropped his bid only hours after securing the nomination. Mr. Emmer’s downfall followed a swift backlash from the right, including former President Donald J. Trump, that left his candidacy in shambles and the G.O.P. as divided as ever.
But by late Tuesday night, Mr. Johnson appeared to have put together a coalition that brought him closer to capturing the speakership than any candidate has been since hard-right rebels deposed former Speaker Kevin McCarthy three weeks ago. Though it was not certain he had the votes to be elected, he said he planned to call for a floor vote on Wednesday at noon.
“Democracy is messy sometimes, but it is our system,” Mr. Johnson said, standing beside dozens of other Republicans in a show of unity after he was nominated. “This House Republican majority is united.”