House Minority Leader Nancy Pelosi (Calif.) predicted Rep. Gabrielle Giffords (D-Ariz.) would "definitely" return to Congress, which could enhance her party's prospects of holding the Senate.

Giffords was considering a Senate bid before she was shot by a gunman in a January attack. She remains in rehabilitation and it's unclear if she will recover to mount a run for retiring Sen. Jon Kyl's (R-Ariz.) seat in 2012. But Pelosi told ABC News she's recovering by "by leaps and bounds" and will eventually return to her official duties in Washington.

"I can't make a prediction in terms of when that will be, but I am pleased with what her surgeon and those doing her therapy have said about her recovery," Pelosi said. "I talk to her. I spent a lot of time with her doctors in the facility where she was at first and now where she is, and in both places they tell me they expect a complete recovery."

Pelosi added: "She is young, she is fit, she is determined, she does her therapy. She now has had this most recent procedure, which will enable her to go home soon. With the strength that she has, I know we'll see her back."