Illinois Senate candidate Mark Kirk (R) said the attacks on his military record have gone from "dirty to ridiculous."

The five-term congressman sent an e-mail to supporters Monday linking to a clip from an interview state Rep. Linda Chapa Lavia (D), a supporter of Democrat Alexi Giannoulias, gave to the Fox affiliate in Chicago on Sunday.

"What I would hope that he would come out and apologize to all the veterans, especially the veterans during the Vietnam era, because that's when he supposedly served," she said during the interview.

Chapa Lavia is the only female state House member to have served in the military.

"I was 13 years old when the Vietnam Paris Peace Accords were signed in 1973," Kirk wrote to supporters. "At this point, it's hard to take what [Giannoulias] or his representatives say seriously. … In the end, we will win this election because our ideas are better."