While not likely, there is a growing number of people ready to throw him out of his seat altogether. I live in his district (actually just a few miles from his house) and get calls about 3 times a week from either an opposition primary candidate’s organization or a “pollster” asking if I plan to vote for him or an opponent in the primary. He has a massive war chest, getting regular mailings and occasional calls from him. Problem I see is three candidates will simply split the opposition vote too many ways and he’ll win his primary unless 2 of the three drop out, and I don’t think that will happen.