Candidates’ ability to follow through on policy isn’t defined by character; you can divine whether or not they can get things done or not by examining their experience. You could, for example, predict that Obama was going to take the lone-wolf approach of his second term by looking at his past work history.
So, I’m in the grocery store tonight, buying toilet paper. I’m at the end of the line for aisle three, the only aisle open. The store manager, seeing that things are getting a little backed up, appears, points at me, and says, “Sir, number two?” I say, “Well, my wife uses it for both.” He was not amused, but I did appreciate him checking me out quickly.