Newt Gingrich is keeping a chipper tone despite his poor showing in this week's GOP presidential caucuses in Colorado and Minnesota.

A federal judge is denying requests to keep private the results of an investigation into prosecutorial misconduct in the case against the late Sen. Ted Stevens.

Mitt Romney just can't shake his difficulty attracting conservatives and that reality is undercutting his effort to cast himself as the inevitable Republican presidential nominee.

The Republican-led House is trying to give President Barack Obama the line-item veto, a power over the purse that has been sought by both Republican and Democratic presidents.

Republican Rick Santorum is looking to capitalize on a string of stunning victories that has snapped his four-state losing streak and raised new questions about front-runner Mitt Romney's clout with conservatives.