When there's any question whether Paul Ryan, the U.S. House speaker and 2012 Republican vice-presidential candidate, would win his primary in a carefully sculpted Wisconsin district against a neophyte challenger with ties to the tea party and Sarah Palin, you know the political world is upside down.
The back and forth over whether Ryan would, or wouldn't, endorse his party's nominee, Donald Trump, dominated news coverage for weeks. Ryan, tugging his chin, hemming and hawing, finally did. But then the tables turned with Trump refusing to endorse Ryan while making very nice to his opponent, Paul Nehlen.
Trump did endorse the speaker, tepidly, a few days ago. Ryan won on Tuesday and will likely win in November, putting one Trump-induced crisis behind the party.
The Ryan re-election is one of a number of contests in which incumbents are threatened, either by an unexpectedly strong primary challenger or in the general election, or both, to the point where Republicans may lose their majority in the Senate, and possibly even the House.