Presidential candidates rely on an elite group of fundraisers known as bundlers to help raise the big dollars needed to run a major campaign. Although there are limits on how much individuals can give to a campaign, bundlers tap their own personal and professional networks to raise tens of thousands -- if not millions -- of dollars.

And after a candidate wins, top bundlers traditionally have been rewarded for their hard work -- often with choice ambassadorial appointments or special invitations to the White House. Access to those in power is much easier for these individuals than it is for the average American.

That's why it's so important to know just who is helping the candidate at the top of the ticket, and for the last 12 years, every major party nominee has publicly disclosed a list of his bundlers -- until now.

Mitt Romney has refused all calls to release information about the identities of those in his army of bundlers. We know. We've asked, [Read the original letter sent to Romney's campaign]

On March 12, a coalition of good government groups and transparency advocates sent a formal request to Mitt Romney's campaign asking that he release information about his bundlers to the public. We've received no response.

Barack Obama has been publicly disclosing information about his bundlers since the campaign began, and Romney disclosed his bundlers during his 2008 bid. But this time around, his network of fundraisers remains in the shadows. Romney has made public only the names of his bundlers who are federally registered lobbyists, which is all that's required by law.

So now we're asking you to add your voice to the call. Campaigns use bundlers to amplify their fundraising. You can help us amplify our message by signing the petition.

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