Senate Democrats, latching on to the financial records of “super PACs” released this week, will resume their push for legislation forcing the quick disclosure of contributions to the burgeoning political action committees.

Senators Charles E. Schumer of New York, Sheldon Whitehouse of Rhode Island and Al Franken of Minnesota said the Senate Rules Committee would hold hearings this month on the proliferation of super PACs established to help a specific candidate. They said they would haul donors before the committee to ask why they were handing over hundreds of thousands of dollars — and in some cases, millions — to these groups, and what they expected in return.

The senators said they hoped to build political pressure to force Senate passage of the Disclose Act, which fell to a filibuster in 2010 when the Democrats held 59 of the Senate’s seats. Passage this year, when Democrats hold 53 seats, would take a significant shift in the political climate, but Democrats insisted that revulsion from the onslaught of negative advertisements funded by the PACs could revive the issue.

The three senators spoke in almost apocalyptic terms about the $50 million that flowed into super PACs in the final three months of 2011. By far the largest amount, $30.2 million, went to Restore Our Future, the political action committee supporting Mitt Romney, the apparent front-runner in the Republican presidential race. Of that $30.2 million, 98 percent came from donations of $25,000 or more, including $1 million from the hedge fund titans Paul Singer and John Paulson, the home builder Bob Perry, and the companies Eli Publishing Inc. and F8 L.L.C., which share an address in Provo, Utah.

“It’s a disaster for our democracy,” Mr. Schumer said, “a poison corroding the deep roots of our democracy.”

Mr. Whitehouse said, “Campaigns can now create their own evil twin.”

Mr. Franken said, “The least we can do is to make sure people who are giving this money, that their identities are disclosed.”

To some extent, the major Republican presidential hopefuls have expressed support for more and quicker disclosure of contributors to the super PACs. But the Democrats’ legislation has been caught up in partisan wrangling.