The Wisconsin primary was held on Tuesday.<br />Joe Biden has a 20-point lead over Sanders.<br />According to NPR, Sanders supporters are fervent and fed up.<br />Sanders' path to the Democratic nomination is getting narrower every day.<br />Biden has a 1,217-to-914 delegate lead over Sanders.<br />To be the nominee, a candidate needs 1,991.<br />That means Biden needs just 46% of the remaining delegates to be the nominee. <br />Sanders needs at least 64% to secure the nomination.
