Marc Thiessen has an oped in the Post claiming that President Trump has kept his promises, kept them better than any other president. His second sentence is "He lies all the time." That's a fitting description for Trump.
After reading Thiessen I ran across another piece, the url for which I've now lost. The thesis was this:
in many House districts, particularly those won by Clinton and by a Republican representative in 2016, Trump's "wins" are unlikely to appeal to the centrist voters the Republican nominee in 2018 needs to win. In many cases, perhaps most recently with judge Kavanaugh, a "win" may increase the odds of a Republican defeat in the House.