… The mounting backlash to President Trump that is threatening his party’s control of Congress is no longer confined just to swing districts on either coast. Officials in both parties believe that Republican control of the House is now in grave jeopardy because a group of districts that are historically Republican or had been trending that way before the 2016 election are slipping away.
Much attention has been paid to the handful of seats in New York, New Jersey and California that are represented by Republicans but voted for Hillary Clinton last year. But even with district lines drawn to favor Republicans in many states, the swelling antipathy toward Mr. Trump threatens to breach the party’s defenses and stretch the congressional battlefield beyond the dimensions Republicans and Democrats anticipated a year ago. CONT.
Jonathan Martin & Alexander Burns, New York Times