Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Stung By 2016 Election Outcome, Pollsters Tweak Their Techniques for 2020 Kane Farabaugh MADISON, WIS. - As she looks ahead to the 2020 Presidential election, it's hard to reconcile the past for Egg Harbor, Wisconsin voter Bernadette Rainsford, who believes there is one key reason why Donald Trump won her state in 2016. "Hillary didn't get here last time," Rainsford told VOA. "We thought it might have helped." It's a complaint echoed by many Wisconsin Democrats who believe Hillary Clinton could have won the election if she had personally rallied voters here in the final weeks of the campaign. But polling in Wisconsin, Michigan, and Pennsylvania -- three key midwestern states Trump narrowly won - showed Clinton didn't need to. "Over 100 polls were done in those three states, and only one in Michigan in October ever showed Trump actually leading," said Charles Franklin, Director of the Marquette University Law School Poll, which then and now, gauges voter sentiment monthly. "That cumulative public polling, including mine, was part of the reason that the evidence pointed to a Clinton win here. It was a sweeping error," he added. An error in several states in the lead-up to the 2016 presidential vote perhaps, but the numbers matched up nationally. .