WHAT IF REPUBLICANS LOSE BOTH HOUSE AND SENATE? The odds are Republicans will lose control of the House in the coming midterm elections, for five reasons: 1) their current majority is so narrow that losing a literal handful of seats would cost them control; 2) they will be hurt by President Donald Trump’s low job approval rating, especially on his handling of the economy; 3) the so-called “generic ballot” poll shows voters would prefer a Democrat to represent them in the House; 4) the war in Iran/the Middle East will be a continuing source of uncertainty and tension for the GOP; and 5) precedent strongly suggests the party that controls the White House will lose a substantial number of House seats.So what if Democrats win? Although there is some internal party debate on this question, there’s a real possibility that a new Democratic majority in the House would impeach Trump for a third time. And there’s no doubt in the world that Democrats would kill the president’s legislative agenda. As bad as that is, it’s a situation Trump could live with because 1) a third impeachment would have a been-there-done-that quality, and Trump would prevail again; and 2) beyond the SAVE America Act, which will not pass this year, Trump doesn’t really have a legislative agenda to kill.Losing the Senate, on the other hand, would be damaging to Trump because he needs to have his nominees — for the courts and his administration — confirmed. A united Democratic majority in the Senate could stop all that cold, and probably would, given the state of today’s politics.