Cheney backs Limbaugh over Powell on GOP future

Cheney favors Limbaugh over Powel in terms of GOP future. In one way this add to partisianship that helps the republicans build a more distinct name brand. On the other hand Limbaugh's politics will no doubt alienate some moderate conservatives. Would the benifits of a more Limbaugh leaning ideollogy lead to a more disicnt republican name brand help or hurt the party? It seems like to me that alienating moderate conservatives is the last thing the GOP needs to do.