It effectively is. Haven't we learned yet that voting third-party gives the race to the Democrats? Just look at Montana - the Republicans would still have the Senate if it weren't for the third-party votes?
To a Libertarian, a big government social conservatives are are no more appealing than a socialist democrats.
Republicans are going to continue to lose a significant amount of the the libertarian vote until they either ease up on the social conservatism or the big government spending.
BTW I listened to about five minutes of Boortz this morning and he said he wondered how he would feel if this happened and today he feels good .. I turned it off... he has really damaged himself with me and I liked him.