Former President Trump, who is expected to announce a third White House bid on Tuesday, has unleashed a series of attacks on rising GOP stars and conservative media, casting a cloud over Republicans who are trying to unite the party ahead of a critical Senate runoff in Georgia.
Less than 1 percentage point separates Republican challenger Herschel Walker from Democratic incumbent Raphael Warnock in the Georgia Senate race. The winner may decide the Senate majority, which is poised to make the Dec. 6 runoff the most important election of the year for the GOP.
Mr. Trump could spoil it for the GOP, some conservatives speculate.