So what he voted for Obama and there are others that have expressed themselves as more than one issue voters... maybe they had other reasons. And alot of people voted for him not by any means a landslide but it wasn't close either.
A President is one cog in a giant wheel and a good experienced Senate majority leader can blunt even the best of intensions of a President.
Look no further back than Tom Daschle(?) and how he blunted GW Bush for the first two years of his Presidency. President Bush wanted the taxes lowered, Daschle wouldn't allow it out of committee or wouldn't allow the bill onto the Senate floor or something along those lines.
President Obama keeps this up he is going to get a Republican senate and that may come as early as 2010.