Yet the Republican infighting is spreading beyond policy disputes on the Hill.

The Senate Leadership Fund, the main super PAC dedicated to electing Republicans to the Senate, formally took a side Wednesday in a contested GOP primary for a candidate to succeed Roberts in Kansas. The super PAC’s aim is to stifle the chances of Kris Kobach, the controversial former Kansas secretary of state who lost a gubernatorial bid in 2018, prevailing in the Aug. 4 primary…

A Senate primary in Tennessee is also becoming more contentious, as the Trump-endorsed candidate, former U.S. ambassador to Japan Bill Hagerty, went negative in his ads this week against his main competitor, Manny Sethi, an orthopedic surgeon whom Cruz endorsed on Wednesday.

The internal rancor this week was sharpest in the House Republican Conference and the attacks against Cheney, the scion of a prominent GOP family who is in position potentially to be the first female Republican speaker in history. The hostilities appeared to catch party leaders by surprise.