One on One With Trump, Melania Trump Int, Sanders and Hillary Locked In Bitter Battle

Donald Trump gets 3 state in a row
Hours away from CNN republican debate
Donald Trump wins his third state in a row
Candidates all over the map ahead of super Tuesday
Sean Spicer talks on Trump
Other GOP runners afraid to attack front runner trump
Clinton,Sanders push for black vote in S.C.
Clinton scores key endorsement from Harry Reid
Sanders pushes Clinton to release speech transcripts
Obama pushes back on GOP plans to block vote
Source: Pres. Obama vetting GOP gov. as potential nominee
Obama slams GOP, calling them "obstructionist"
U.S. skeptical of Russia, considers "Plan B"
Halt in violence would not include ISIS, or AL-Qaeda
ISIS militants expand operations across Libya
Obama: GITMO helping to create new terrorists
Tornado warnings stretch from Carolinas to Virginia
Possible tornados blamed for two deaths in Virginia
Trump domination
Can Donald Trump be stopped?
Trump wins third consecutive state
Will Jeb Bush donors flock to Rubio?
Does Rubio have a path to the nomination?