The leading three
Democratic U.S. senators running for president barnstormed across Iowa this weekend, seeking to maximize a frenzied 36 hours before returning to
Washington to resume duties as jurors in President Donald Trump's impeachment trial.
With barely a week to go before Iowans gather in caucuses to deliver the first verdict of the Democratic presidential race, Bernie Sanders,
Elizabeth Warren and Amy Klobuchar flew to the state immediately after Saturday's trial session ended early, hoping to gain ground in what has been an unsettled contest.
The latest state polls have shown either Sanders or former Vice President
Joe Biden in the lead, with Warren and former South Bend, Indiana, mayor Pete Buttigieg, close behind.