One from Illinois.
It was Tim Johnson, Republican of IL. Don’t know why he voted against the Republican alternative, but he won’t vote for Obamacare - see his press release on the subject:
http://timjohnson.house.gov/index.cfm?sectionid=29§iontree=7,29&itemid=291
And given that Cao didn’t vote against the Republican alternative, it’s unlikely he will vote for Obamacare (unless he’s an idiot who votes for both plans.)