Simply put, this thread is an open one on potential Presidents who weren't, and which of them would have lead the country in a way better than perhaps someone who actually did achieve the Presidency in OTL.
Describing the effects of your vote itself would be interesting, I think. For example, if you think that a William Jennings Bryan presidency would be preferable to a Taft administration, why not juice it up a bit? Do a bit of explaining why you voted for the candidate, and the possible effects of said candidate actually becoming President, if you would.