 Minnesota News Network. Fourth District Congresswoman Betty McCollum is joining the list of Democrats calling on President Joe Biden to drop out of the presidential race. On Friday, McCollum said in a statement to KMSP, "...winning in November and defeating Trump's dangerous, hate-filled agenda must be Democrats' sole focus. To give Democrats a strong, viable path to winning the White House, I am calling upon President Biden to release his delegates and empower Vice President Harris to step forward."