Some haven't helped their images by seeking to raise rates in the months before CARD goes into effect or — as Citibank and Bank of America did recently - announcing they would place new fees on cardholders who don't carry a balance.
Last week, Udall introduced a bill to move the effective date of CARD to Dec. 1. When Sen. Chris Dodd, D-Conn., introduced a bill to freeze rates immediately, Udall joined that effort as an original co-sponsor.
After several appearances on cable news shows calling for card companies to pledge to act responsibly, Markey on Wednesday introduced a House version of Dodd's bill and firing off a letter to Citibank and Bank of America.
"Penalizing consumers for responsible credit practices is both absurd and unfair," she wrote, noting the $45 billion in bailout funds the companies have each received in the last year.
All the focus is partly defensive, said Floyd Ciruli, a pollster in Denver. Among the Democrats biggest weaknesses going into next year's elections may be anger that the government bailed out Wall Street - which is now recovering - while many ordinary workers remain jobless.
"That's a vulnerability for Democrats," Ciruli said. "A good inoculation against that is to take on the banks and credit card companies on the interest-rate issue."