Here's yet another indication that national Republicans think they're seriously at risk of losing a key Senate seat in deep red Mississippi: President Bush is set to visit the state on July 1, for a fundraising event with appointed Sen. Roger Wicker, the Tupelo Daily Journal reports.

Recent polls have shown a close race between Wicker and Democratic candidate Ronnie Musgrove, a former one-term governor -- even though Bush won the state by a 60%-40% margin back in 2004.

This visit tells us two things. First, that Republicans are genuinely worried about this seat and are moving to build up their financial advantage -- and given the state's deep conservatism, a loss here would be devastating. Second, there is at least one state left where a Republican would actually want Bush to visit on his behalf.