I don't think that is good enough.
I think they ought lose more.
Of the fourteen California Republican representatives, eleven—Cook, McCarthy, Nunes, Calvert, Hunter, LaMalfa, Walters, Valadao, Denham, Royce, and Knight—all voted for the tax bill that targeted their core supporters—the prosperous largely-white upper middle class of California that carried Hoover, Nixon, and Reagan to the presidency—with a bullseye. That bill added their state and local taxes—money that their constituents never saw—into the federal tax base, and then taxed them not on the income they received but on money they never saw. Why? Because they are, now, working not for their constituents who have loyally supported them, but for the plutocrats who now fund them and the lobbyists whom they hope to work for in the future.
Mimi Walters' constituents alone are going to have one billion dollars a year taken out of their paychecks as a result of the SALT provision. This money comes out of the prosperous upper middle class of those who have been the backbone of the Republican Party and for whom America has worked very well. But they are of no longer any concern to Republican politicians—their donations are not needed because much more money is provided by plutocrats in these post-Citizens United days, and their votes are unlikely to swing elections to produce national-level senators or electors for the Republican Party.
Of those Republican incumbents running for reelection this year, only Tom McClintock and Dana Rohrbacher were willing to put their constituents above plutocrats and lobbyists in the vote last December. (Young Kim and Dianne Harkey are non-incumbents running in current Republican-held seats.) The rest have broken their contracts with their districts, their voters, and their supporters. Even if you thought they belonged in the House as of last November, you really cannot believe they belong in the House now. Four is the maximum number of Republican representatives the Republican voters of California ought to send to the House this November...