Why Must Male Candidates Call Their Female Opponents Whores?

Sarah Palin-backed Alaska Senate candidate Joe Miller, who's likely to pull off a surprising upset over incumbent Sen. Lisa Murkowski in the Republican primary, thinks that Murkowski is a real whore. Oops! Here comes a deleted tweet...

Joe Miller has deleted this incredibly stupid tweet, most likely because it calls his female opponent a whore. It linked to a Daily Caller story about Murkowski possibly running as a Libertarian if/when she loses the close primary held three days ago, the results of which are still being counted.

Why Must Male Candidates Call Their Female Opponents Whores?

Does Sarah Palin condone such language from her prized candidate?

[Top image via AP]