Voters Head to Polls in Key States, Setting the Stage for Midterms

Voters are gearing up for a key primaries with razor-tight races in six states, including Iowa where Democrats are hoping to win a Senate seat in the traditionally Republican state. Meanwhile in California, former reality star Spencer Pratt is gaining late momentum in his push to lead Los Angeles, the nation’s second-largest city. NBC’s Liz Kreutz reports for TODAY.