For what?
What on earth does anyone need a Republican congress for?
Um... To Repeal ObamaCare and Dodd-Frank? To abolish the CFPB? To reform the tax code? To appoint conservative justices? To rebuild the military? To team up with Russia and destroy ISIS?
Read the Constitution. The American president does not rule by decree. He needs congress!
If Trump wins, and the GOP loses the congress, then, for the next two years, Trump's persuasion skills will meet their ultimate test. Can he talk over the heads of congress and the MSM and persuade the people to throw the bums out in 2018 and give him a congress he can work with? Will the American people be that patient? Or will they give up and go gimmee Progressive, making Trump a one-termer?