 Ohio Senator Sherrod Brown has also urged the president to withdraw from the race. He is the fourth senator to do so, and the 35th Democrat overall to publicly call on Biden to step aside. Former President Donald Trump will be campaigning in the key swing state of Michigan today. Trump is to deliver remarks with his choice for vice president. Ohio Senator J.D. Vance by his side. The highly infectious polio virus has been found in six sewage samples in Gaza.