How quickly some forget

Just read something off NBC's site about Dick Lugar's defeat that shows that journalism is lacking:

Lugar, along with Utah’s Orrin Hatch, is the longest serving Republican in the Senate. But like GOP senators Lisa Murkowski in Alaska, Bob Bennett in Utah, and Arlen Specter in Pennsylvania in 2010, Lugar found himself challenged by those in his party who decided he was not conservative enough on federal spending.

Alren Spector was defeated in a Democratic Primary after he switched parties.