The only thing that I will say is do not look at betting on politics the same way that you'd bet on a fight. If you have a fighter lose a decision 48-47 at +250 or whatever, you will probably feel good about your bet. You need to look at politics a bit differently. If a political favorite wins at as low as 1% or 2%, it doesn't necessarily mean the other candidate had a great chance of winning.
Say you set a threshold of 2%. Ask yourself this - what is Hillary's chance of winning > 2%, between 1-2%, or between 0-1%? Now compare those to Trump at those same percentages. I think you'll have a lot of people celebrating a good play on Trump if Hillary only wins between 1-2%, and that's just a fallacy. I think Trump's most likely scenario would be the slimmest of margins (0-1%) while Hillary's greatest chance is likely between 1-2% and she still has a greater chance at the 0-1% margin. I also think >2% is a real possibility.