WASHINGTON—The FBI search of Donald Trump’s Mar-a-Lago home rallied many prominent Republicans around the former president and could shift the political course of both the midterm elections for control of Congress and the 2024 presidential race.
While many details of the FBI’s investigation remain unknown, the developments both challenge and underscore Mr. Trump’s hold on the GOP, just as he is publicly considering a third run for the White House. Many Republicans, including potential presidential rivals, denounced the search, casting it as a politically driven action by the Biden administration, while others demanded more details from the Justice Department but stopped short of criticizing its motives.