3. If GOP leaders in the Senate and House are really that worried that Donald Trump may be the nominee and lose badly against Hillary Clinton next fall, and Republicans might lose their hold on the levers of power to the Democrats, find someone to run as a third-party candidate. Congressional Republican candidates would be much better positioned if Mrs. Clinton wins with a margin in the forties, with folks splitting their votes at the top of the ticket and then looking down ballot in a discerning way. Hillary Clinton racking up a large margin at the top of the ticket in a one-on-one race against Donald Trump puts GOP congressional candidates in a very precarious position.