CEDAR RAPIDS — Democrats competing for support in the Feb. 3 caucuses have had more than 2,200 campaign in Iowa since the last presidential election.Some have drawn huge crowds. Vermont Sen. Bernie Sanders’ campaign reported more than 1,000 people at his Ames rally Saturday night in addition to hundreds of thousands watching the livestream of the event.The Polk County Democrats’ steak fry drew an estimated 12,000 people to see several of the candidates.Attendance at smaller events has ranged from handfuls to hundreds for more than a year of intense campaigning in the first-in-the-nation nomination contest.And yet, Iowans say that seeing the candidates in person ranks at the bottom of a list of 12 most frequently used sources of information.