Romney supported Tsongas and is on video expressing opposition to Reagan.
The fruit doesn't fall far from the tree - his dad fought the Reagan-wing of the party too.
So what if Newt supported Rockefeller way back when? We've all made some mistakes in our younger days. To my shame, I once voted for Frank Church. Then I wised up. More than a few people have made the migration from Rockefellerite to Reaganite.