Nineteen of the nearly two dozen Democratic presidential candidates were in Cedar Rapids yesterday for the Iowa Democratic Hall of Fame Dinner. Joe Biden wasn’t there. He attended his granddaughter’s high school graduation in Washington, D.C. Biden is expected to visit Ottuma, Iowa tomorrow. A poll released over the weekend shows Biden leading the 23 candidates running for the Democratic nomination. He is ahead by 8 points at 24%. That is down from 30%. Bernie Sanders was second with 16%,