Sentence:  "That was just painful," said one Republican official who . . . added that the reality is McConnell—and Ryan and every Republican in a leadership position or facing an election challenge—"will be stuck dealing with the latest <WSD>Trumpism</WSD> every interview of every day, of every month until November." 
Meaning of the word marked with <WSD> tags:  A characteristic phrase or statement made by (Donald Trump).