WASHINGTON (AP) -- For every presidential candidate, there's now at least one $1 million donor.
Millionaire and billionaire executives have unlocked their personal bank vaults to write seven-figure checks to support the campaigns of President Barack Obama and Republicans Mitt Romney, Rick Santorum, Newt Gingrich and Ron Paul.
A review of campaign financial reports by The Associated Press finds that more than half the $60 million collected so far by super political committees in the race came from just 24 wealthy Americans.
In some cases, the contributions of $1 million or more represent most of the money that super PACs have collected from all their contributors.
These outsized donations are allowed under the landmark 2010 Supreme Court ruling known as the Citizens United case.