On the Democratic side, a potentially historic clash lies ahead. For the GOP, Michigan is the next test.
Results in the Granite State mean frontrunners in both parties will continue to duke it out for the nomination.
The Democratic contest is more likely to be decisive.
Caucus results shake up the race for the White House in both parties.
Two want to abolish the income tax – and the IRS. Others say they'd renew the Bush tax cuts.
An Iowa Democrat has 30 minutes to rustle up five more votes for her candidate.
As the climate debate shifts away from the blame game, there's a growing interest in climate-action strategy.
Most polls show a very close race among the top candidates in both parties, so the outcome hinges on which campaigns are best at turning out their supporters.
Veteran pollster finds Huckabee and Romney neck and neck in Iowa, while Clinton's lead shrinks in the Granite State.