Here's my current thinking...
Ransac appears that he might be telling the truth. If someone else is the real cleric, then they know better. Oversoul has already mentioned, however, that a minion may easily pretend to be the vampire.
It seems to me that the numbers here are very important. As such, the cleric hiding his presense for a while seems to make sence. Was turgy just trying to get the cleric to expose himself?
If among myself, Ransac, and sageridder, you have the vampire and a minion, the cleric wouldn't have hesitated at all. You announce that the vampire must be one of the three and move on. If none of us were a minion or a vampire, you have a similar possibility, though you don't get to clear quite as many people.
The vampire knows that the cleric gets to see how many people "winning" the vote are among the vampire/minion group. As such, he might take steps to make sure that only one voted for.
Looking at the voting history, all three of us voted for Oversoul fairly early. Only Spiderman and Limited had already voted, so unless one of them is a minion, I suspect that one of us three is more likely a minion that the vampire.
Once the voting had stabilized, Melkor jumped in with a vote for Spiderman. If he were the vampire, he may have been waiting for his minion to vote first to make sure that the minion/vampire vote was split.
My guess is that Ransac is a minion, figuring that Oversoul had a good idea, but sageridder could just as easily be a minion.
As for the vampire, having thought it out a bit more, I'm voting for Melkor