Republican strategist Karl Rove, shown at the Republican National Convention in August, is arguing for continued secrecy for the new class of million-dollar political donors.
Casino magnate Sheldon Adelson at the presidential debate between Mitt Romney and President Obama, in Denver on Oct. 3. Adelson invested millions in an effort to help elect Romney — but only after bankrolling a superPAC for former House Speaker Newt Gingrich in his anti-Romney Republican primary battle.
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Karl Rove, former adviser to President George W. Bush, speaks last year in Corpus Christi, Texas. Rove is the chief fundraiser for the biggest outside spender this election season: the twin groups American Crossroads and Crossroads GPS.