In a move that could signal that endangered Republican Senator Jim Bunning is going to retire, State Treasurer Trey Grayson (R) has announced he is forming an exploratory committee to run for ther Senate in 2010, reportedly with the approval of Bunning.

Speculation is Bunning will announce his retirement in the coming weeks. This would be good news to Republicans as Bunning was seen as very vulnerable, though it does increase their open seats.