I'm not a big fan of Hillary Clinton, but there is no way I want a Republican House, a Republican Senate, and a Republican President. Such a combination would set us back several decades with some of the policies they support. We need to have a check on the power of any one party. Single party rule left unchecked would not be good for the country, because it would put too much power in the hands of the extremists in that party. I might be forced to hold my nose and vote for Hillary to keep the extremists in the Republican party from pushing through their agenda unchecked.
By the way, I'm not in favor of the Democrats controlling the House, Senate, and Presidency simultaneously either. The left-wing extremists would be just as much a threat as those on the right. If the Democrats had control of the House and Senate, I would likely vote for the Republican presidential candidate to keep the extremists on the left from running wild.
We could use a system with some of the checks and balances inherent in the British Parliamentary System. Multiple parties (none of which could win a majority) forming a coalition would ensure compromise rather than extremism. And right now our country could use a little compromise. How's this for a presidential race with the winners having to form a coalition with some of the losers to ensure a majority:
Tea Party Candidate = Ted Cruz
Traditional Republican Candidate = Jeb Bush
Libertarian Candidate = Rand Paul
Socialist Candidate = Bernie Sanders
Traditional Democratic Candidate = Hillary Clinton
Liberal Democratic Candidate = Elizabeth Warren
If these six candidates (or someone similar) were all on the ballot and voters knew that their vote would not be wasted by voting for one of the non-traditional candidates, none of the above would win a majority of the vote or enough electoral votes to be elected president. If our system forced the above candidates to compromise to gain the necessary majority, we would have far less partisanship. If the coalition could not hold together, a new election would be held and a new coalition formed.
I could see a coalition of Jeb Bush and Hillary Clinton working together to keep the extremists of both parties at bay. I could also envision an anti-war coalition of Bernie Sanders, Rand Paul, and Elizabeth Warren.