The National Republican Congressional Committee is using the revelations from Rep. Anthony Weiner (D-N.Y.) to attack House Democrats.

The House Republicans' campaign arm is pressing 18 Democrats to give back campaign donations from Weiner.

The lawmakers were the target of an email blast Tuesday, with the NRCC asking if each legislator will "return embattled Congressman Weiner's tainted cash."

The NRCC emails come less than 24 hours after Weiner admitted to sending a tweet of his waist area clad in only underwear. Weiner also admitted on Monday that he had had "inappropriate" conversations online through various social network services.

The House Democrats the NRCC is targeting are: Reps. Betty Sutton (D-Ohio), Bill Owens (D-N.Y.), Gerry Connolly (D-Va.), Ed Perlmutter (D-Colo.), Tim Holden (D-Pa.), John Barrow (D-Ga.), Brian Higgins (D-N.Y.), Jim Himes (D-Conn.), Joe Donnelly (D-Ind.), Kurt Schrader (D-Ore.), David Loebsack (D-Iowa), Mark Critz (D-Pa.), Carolyn McCarthy (D-N.Y.), Gary Peters (D-Mich.), Rush Holt (D-N.J.), Russ Carnahan (D-Mo.), Tim Bishop (D-N.Y.), and Tim Walz (D-Minn.).

Weiner's announcement was the latest development in the so-called "Weinergate" scandal which started over a week ago when Weiner tweeted a picture of his waist area. It was immediately taken down and, up until Monday, Weiner maintained that he did not send the tweet and that his account had been hacked.

In response to Weiner's admission House Minority Leader Nancy Pelosi (D-Calif.) and Democratic Congressional Committee Chairman Steve Israel (D-N.Y.) called for the House Ethics Committee to investigate if "any official resources were used or any other violation of House rules occurred."

Weiner said he would cooperate with the investigation.