Too many here are "all or nothing". There seems for some no long term vision of the war. No sense that sometimes you lose a battle to win the war. At this time and in this culture of 'American Idol elects the POTUS', an incremental strategy is required which unfortunately means some 'RINO's (i.e. Castle, Lowden, Murkowski, Norton) are a gain and necessary ... if that would result in taking the Senate out of Reid's evil hands.
That is a war worth winning, even at the 'cost' of a few RINOs.
It is believed it is more virtuous to lose than to elect someone less than ideal. It is NEVER acceptable to allow a Democrat to defeat even the most liberal of Republicans. This is why we're in the morass we're in. We take any little victory--no matter how small.