I'd vote for Davis over Riordan. Riordan wants a GUN BAN, and said so. Not to mention he backed Klinton, Feinswine, and Davis.
I'd back Simon over all of them.
It's his in-your-face baby killer stance that bugs me the most. Since Riordan doesn't agree w/a thing I believe in, I figure I might as well support Davis -- at least he's honest about his party affiliation. It will be painful supporting a Dem, but (if Simon doesn't win the primary) I'm willing to make that sacrifice.