Conservatives should not tolerate the likes of Mike Castle because of the simple fact that a 51 member Senate with Mike Castle is a Senate where Mike Castle is the most important vote in the room. As Specter and others before him, that Senator will set the terms of policy debates, determining in advance what can succeed and fail. Those who advance the argument that a majority with Castle is better than being in the minority tend to place priorities on Senate committee chairmanships and staff ratios and lobbyist cash… a list which pales in comparison to the power they would wield as the broker for both sides. Again and again I saw this play out during my time as a Senate staffer, and anyone who tells you contrary is incredibly naive about the way legislative decisions are made.h/t Right Wing News
As a friend of mine in the business of campaigns and elections has said, electing moderates simply to secure a majority for Republicans is a self-defeating proposition. We’ve seen this play out time and again. Career politicians abhor principle, and adore power and fecklessness. Their presence in Washington provides constant aid and comfort to the Left. They dilute the brand, confuse voters and sell out conservatives just at the moment they are needed most.
The GOP Establishment's Stinking Thinking
O'Donnell can win the general if we all decide she will.