According to Martha Zoller via the Political Insider
In a background meeting of Republican activists last week, [participants] were concerned that Senator [Saxby] Chambliss will be challenged in the 2008 primaries. Republicans don’t like opposition to their sitting elected officials, but if they continue to show complete disdain for the voting public, they will have it. At this moment, there are two members of the Georgia state legislature traveling the state to see if they can garner support for a run against Senator Chambliss.
So who are the two Legislators “traveling the state?”
There was talk of a primary challenge to Sonny last year which never materialized (Ray McBerry wasn’t a serious challenger) so I imagine the current angst will pass and Saxby will be the GOP’s nominee.