A roundup of the week that was in political dark money, including a look at where attacks ads are most concentrated and tallies of the exponential increase in spending since Citizens United.

From Mother Jones, the week that was in the world of political dark money, including Karl Rove's American Crossroads and liberal super PACs in the Massachusetts congressional race.

Richard Hasen, author of the Election Law Blog, discusses truths and exaggerations on both sides of the voting rights debate.

Author Craig Unger describes the behind-the-scenes maneuvering that may enable Karl Rove to to once again affect a presidential election.

An excerpt from Craig Unger's new book, framing Karl Rove as Republican Party kingmaker.

The election's 10 weeks away, but spending from outside groups has already eclipsed the $301.6 million spent in 2008.

Does the former Christian Coalition leader’s resurgence signal a new revolution or an old racket?

Social welfare organizations — or 501(c)(4)s — are shaping up to be the major players in this year's election. Find out more about them.

Two conservative nonprofits, Crossroads GPS and Americans for Prosperity, have poured almost $60 million into TV ads to influence the presidential race so far, new spending estimates show.

Scientists believe that they may yet find life in the dark matter spewed by giant red and blue planets into our election atmosphere.