But Yarmuth stressed that Judd hasn't communicated any decision about her plans to him. 

“In my opinion, Ashley in her own mind has made a decision to run. She has not told me that," Yarmuth said. 

“I don’t think she has made a final decision to run.”

Yarmuth's comments came on the heels of his remarks to ABC News that Judd appeared to be taking the steps necessary to mount a campaign against McConnell. 

"My impression is this is something she wants to do, and she is now taking the time to make the contacts she needs to make throughout the state to try and generate commitments of support and in some cases fundraising," Yarmuth told ABC News. "She is certainly acting like a candidate, a potential candidate.

"I think in her own mind ... she has made a decision to run and she's doing the right thing and not ruffling any feathers along the way," he added.

Last week, Judd made a number of significant steps forward in laying the groundwork for her potential bid.

As The Hill reported Wednesday, she met with the Democratic Senatorial Campaign Committee, which engages in fundraising and recruitment for senate races nationwide, and also had dinner with Democratic donors in the state at a dinner at the home of Christy Brown, the widow of Jack Daniel's whiskey magnate Owsley Brown II, who is active in state politics.

Judd joined nine others at the dinner, including Yarmuth, who has been vocal in his support of the actress, and former Kentucky Democratic Party Chairman Jonathan Miller.

According to a person familiar with the meeting, it offered the opportunity for potential supporters to ask questions and offer concerns about Judd's interest in the race. Judd said at the meeting she would make a decision by May 6, on the day of the Kentucky Derby.

Yarmuth told ABC News that he expects Judd's decision to come soon, and in the meantime, she has conducted opposition research on herself to prepare for potential attacks from McConnell. She has already been the target of an attack ad from the GOP super-PAC American Crossroads.

"I think she has no illusions about what Mitch McConnellAddison (Mitch) Mitchell McConnellTurkey sanctions face possible wall in GOP Senate Fox's Wallace says 'well-connected' Republican told him there's a 20 percent chance GOP will vote for impeachment White House staggers after tumultuous 48 hours MORE will do and the fact that his entire career he has demonized opponents and never talks about himself," Yarmuth said of Judd's preparation for a run. "In her world she is used to dealing with a lot of nonsense so I think she will deal with it very well."

- Sheldon Alberts contributed

- Updated at 4:30 p.m.