Washington (CNN) -- Fellow Democrats mounted increasing pressure Wednesday for Rep. Anthony Weiner to resign, a day after party leaders turned their backs on the liberal congressman embroiled in a "sexting" scandal. Sen. Mark Pryor of Arkansas and Reps. Allyson Schwartz of Pennsylvania, Michael Michaud of Maine, Mike Ross of Arkansas, Niki Tsongas of Massachusetts, Larry Kissell of North Carolina and Joe Donnelly of Indiana joined a growing chorus of Democratic voices that have called for Weiner, D-New York, to step down over sexually tinged online communications with several women that he then lied about. "Enough is enough," Donnelly said in a statement. "It's time for Congressman Weiner to resign. His actions have disgraced the Congress. Everyone should be focused on jobs and the economy and his refusal to do the right thing is a distraction."
@highlight
NEW: Democratic colleague says contrite Weiner called to apologize
@highlight
More Democrats join call for Weiner to resign
@highlight
An explicit photo claimed to be of Weiner is posted online
@highlight
Sources say Weiner's district will likely be eliminated in the redistricting process
Joe Donnelly
Donnelly
In addition, @placeholder and some other Democrats have announced they were donating campaign contributions from Weiner to charity.
Anthony Weiner
Weiner
Weiner
Weiner
Weiner
Weiner
Weiner
The congressman, who spoke on condition of not being identified by name in order to discuss private conversations, said the public call by Schwartz was part of a stepped-up effort to force @placeholder out.
Democrats
Democratic
Democratic
According to a @placeholder congressman who got one of the calls, Weiner was "very contrite" and said he "let everyone down."
New York
Two of the sources -- both Democratic strategists in New York -- said the impending redistricting is one reason @placeholder Democrats aren't rushing to call on Weiner to resign.