Karl Rove-linked political nonprofit releases tax returns, out-raises super PAC sister.

Quick stats on the nonprofit group, supporting conservatives

Quick stats on the nonprofit group, supporting conservatives

Methodology behind assigning our transparency letter grades to super PACs and nonprofit groups.

Turn to us through Election Day and beyond for the narrative behind the massive flow of money at federal and state levels.

Video paid for by 'social' welfare' nonprofit.

A mystery nonprofit group drops a cool million opposing Obama.

A secretive foe of campaign finance rules can't explain IRS filing noting $300,000 donation.

Underwriters of attack ads can easily avoid being named.

Secretive nonprofit received $300,000 donation from anti-union group.