Front Runner Mode News Today

Frustrated with lack of action and that is why he is running for president. it was a big weekend for the top democrats, nbcs kelly odonnell reports. >> reporter: a raucous ritual to fire up iowa democrats. team bernie sanders decided raw decibel level showed their organizing strength. clintons campaign countered with a more subdued but eye catching light show. sanders trying to prove he is the true progressive, made clinton his target with a string of differences from the iraq war to trade and...