It is Obama =UNACCEPTABLE
Well, given that he OPPOSED the Republican nominee in 1988, 1992, 1996, 2000, 2004, and in 2008 (when Obama was the Dem nominee... whoosh! right over YOUR head), apparently "It is Obama" doesn't = "UNACCEPTABLE", unless Obama is the incumbent.
And clearly "It is Dukakis/Clinton/Gore/Kerry" didn't motivate him to support the Republican, either.