Top 10 House Challengers By Roll Call Staff Posted July 29, 2008 at 12:00am Facebook Twitter Email Reddit Chart: Most Cash-on-Hand, House Challengers to Opposite-Party Incumbents House Races to Watch Jigsaw Politics: Top Five GOP Bids to Keep House Hopes Alive Recent Stories At the Races: Impeachment impact Capitol Lens | Striking a pose above the throes Democrats prepare to ride to Johnson’s rescue, gingerly Spy reauthorization bill would give lawmakers special notifications Capitol Ink | Senate comebacker In France and US, two wildly different takes on IVF