Bernie Sanders is drawing more of Barack Obama's 2012 campaign donors than Hillary Clinton.

And Marco Rubio is scoring the biggest share of Mitt Romney's contributors thus far.

These are the findings of Crowdpac, a San Francisco-based political data-mining firm which analyzed the July presidential campaign finance reports.

The Vermont senator has already received contributions from 24,582 of Obama's donors; whereas Clinton has only tapped just over 9,000 of them. Martin O'Malley, the former Maryland governor, has grabbed 383 Obama donors.

That means Sanders has nabbed 72 percent of the 34,340 Obama donors who have given to a candidate in 2016, according to Crowdpac.



A majority of President Obama's 2012 donors who have given money to a 2016 candidate have donated to Bernie Sanders' campaign. Graphic by Ethan Rosenberg for USN&WR/Photos by Getty Images

Ever since Mitt Romney dropped his flirtation with another White House bid last winter, the rush has been on to court his moneymen and women.

Rubio's winning that charge.

Crowdpac found that the first-term Florida senator has nabbed the greatest number of Romney donors so far – 2,891.

Perhaps more surprising. though, is that Ted Cruz is landing more of Romney's donors (1,840) than Jeb Bush (1,562).

Ben Carson is fourth in the GOP chase for Romney's contributors with 1,285.

Overall, of the 9,302 Romney donors who have doled out money to a candidate in 2016, Rubio has snagged about 31 percent of them.

