Republicans launched a political ad in Kentucky this week attacking actress Ashley Judd as a "Hollywood liberal" even though she has not yet decided to run for the Senate.

The ad, backed by Republican strategist Karl Rove, prompted Judd to respond that she was grateful for the attention as she mulls a run against Republican U.S. Senate leader Mitch McConnell in the 2014 Kentucky race.

"Ashley thanks Senator McConnell, Karl Rove and their negative allies for all the attention as she considers her future political plans, although a decision hasn't been made yet," according to a statement from a Judd spokesman.

Rove launched a Kentucky-targeted You Tube video advertisement this week that suggests the actress does not fit the conservative culture of the state. Rove said on Fox News' "The O'Reilly Factor" Thursday night that "this is just the opening ad" and there will be more to come.

Rove's American Crossroads group declined a Reuters request for comment.