The Democratic nominee vying to fill Sen. Jim Bunning's seat in Kentucky sent out a fundraising e-mail Saturday calling for former Sen. Alan Simpson (R-Wyo.) to step down as co-chairman of President Obama's deficit reduction commission.

Simpson raised the ire of women's groups by speaking about Social Security in a way that Conway, who faces Rand PaulRandal (Rand) Howard PaulSenate passes 6B defense bill This week: House GOP caught in immigration limbo Amendments fuel resentments within Senate GOP MORE in November, said should "absolutely disqualify" him from the panel chairmanship he shares with Erskine Bowles.

"If you haven't heard, Chairman Simpson sent a sneering e-mail to the executive director of the Older Women's League calling the most effective anti-poverty program in our nation's history 'a milk cow with 310 million tits,'" Conway said in the e-mail.

"Rather than use offensive language to make headlines, Chairman Simpson should recognize that he serves as a distraction to the rest of the group and step down."

Conway's online petition demanding that Simpson resign had 1,268 signatures as of this posting.

Rep. Raul Grijalva (D-Ariz.) said Friday that Simpson needed to be pulled off the commission, and  the commission as a whole needed to be questioned. Separately, New York Dem Rep. Jerry Nadler issued a statement saying Simpson's "comments were offensive, ignorant and misleading, and he should be fired immediately."

Women's groups including the National Organization for Women were also up in arms Friday. "The problem lurking behind all of this is President Obama," NOW president Terry O'Neill said during a conference call. "I find this deeply disturbing that he has not fired Alan Simpson."