Source: The Economist, January 4, 2018
If that were to happen, Congress would become even more polarised than it already is. ….
…. She [Barbara Comstock] is one of 23 Republicans representing districts that Hillary Clinton won in 2016. Democrats think they can flip them all, and more: the Democratic Congressional Campaign Committee (DCCC) has 91 districts in its sights, the lion’s share of them in states that Mrs Clinton won or barely lost. They are, of course, unlikely to win them all. But an upset election, as this year’s midterms in November could easily be, will break first and hardest in those states—which would leave the Republican congressional caucus smaller and more strident, and risks making Congress even more dysfunctional….