This is the jist of this article, from the Wall Street Journal, of all places.

“More striking,” Pew concluded, was the change in party identification since 2002. Five years ago, the population was evenly divided — 43% for each party. This year, Democrats had a 50% to 35% advantage.

What you have left in the Republican party are dead enders, bigots, and Religious nuts waiting for the apocalypse.

These folks are not good markets to sell to.