Why the sudden change of heart?
“the sense across the party is that the race has broken in Mourdock’s direction throughout Indiana”
From the article: “The race seems to be slipping away from Lugar and the American Action Network may want to avoid inflicting any more damage on Mourdock, the likely nominee, ahead of what could be a competitive general election race...”
That would be a refreshing change for the R establishment. It’s usually scorched earth against any conservative who dares challenge them.