MSNBC is striking while the political iron is hot. After seeing its ratings spike by 62 percent in the primary-packed month of February, the cable news channel is adding a new nightly hour-long show, Race to the White House, devoted solely to covering 2008 presidential campaign.

NBC News White House correspondent David Gregory will anchor the program, which will replace Tucker in the 6 pm/ET slot starting March 17. Tucker host Tucker Carlson will remain with MSNBC as a senior campaign correspondent. MSNBC is also turning over a daytime hour to political coverage that will be anchored by Andrea Mitchell.

In prime time, NBC News legal correspondent's Dan Abrams' 9 pm program is being relaunched with a new name, Verdict with Dan Abrams. Abrams will look at the day's news from a legal perspective - with an added focus on politics during the campaign season. - Stephen Battaglio