Morals are personal. However, many of the the choices that people make based on those morals are not.

I don't believe that morals should have any bearing on the qualifications of a politician, unless they can be shown to have caused actions that would have bearing, in which case, the morality itself is irrelevant, only the action that it caused.

For example, I fail to see how the morals that led to getting a hummer in the Oval Office affected Clinton's ability to be president. I do see how they affected his ability to be a good husband. The latter is none of our concern. The morals that would have led him to commit fraud in the Whitewater thing (had they ever been proven in any way) could affect his qualifications as president, but the action of the fraud itself would be enough to point that out.