Reagan had the blue dog southern democrats that helped him...
there long gone
The first George Bush... REAGANS biggest mistake...and Bob Dole were against the tax cuts...
They may have voted for them in the end ..I cannot remember
http://www.nytimes.com/1981/07/30/politics/30REAG.html
the answer...
Yes, the Blue Dogs are gone because they all turned Republican. Which is why the South has been solidly Republican for the last 30 years.