Cuellar was one of several Texas Democrats to support Bush over Al Gore in 2000.
Cuellar later was appointed secretary of state by Gov. Rick Perry before being elected to Congress as a Democrat.
And can this, from Wikipedia, possibly be true?
Cuellar describes himself as a "moderate conservative" and attempted to join the Blue Dog Coalition of House Democrats on Capitol Hill, but was rejected due to his massively low popularity within his own party.
Anyway, you can give here.