I have an unfavorable opinion of Trump, and yet I will vote for him just the same. Most of my friends and acquaintances have an unfavorable opinion of Trump, and they all intend to vote for him as well. I'm not sure what the relevance is of "unfavorability." I didn't like Nixon either but I would have voted for him if I had the chance. Didn't like Romney.
On the other side of the spectrum, most people find Hillary Clinton revolting. It's a fact. And yet Blacks will vote for her by probably a 20-1 ratio, Hispanics will vote for her, most people living off the government will vote for her, and many, many women will vote for her despite her detestable personality and total lack of accomplishment. I doubt that 10% of the electorate will vote for her because she is their desired candidate.
I really don't think the fact that both candidates are obnoxious ass-holes will effect the outcome of the election. We have what we have.
