Like John Locke, I believe that all conflicts can be resolved by rational discourse. Of course, both sides have to be rational and discoursing. But if the planets align, the wonders of rational decision-making can be the route to good policy and good lives.

So one would think that if we inserted rational decision making tools into the presidential selection process, that would be a good thing. At least in principle.

But do we vote with our heads or with our hearts? Do we pick the candidate we agree with the most or the one who makes us feel good? For those who vote with their heads, three new websites should appeal strongly to your desire to understand what you get with your vote, at least in principle.