WATCH: Biden starts off his speech in Milwaukee by mumbling incoherently

President Joe Biden appeared to slur his words once again as he delivered remarks at a campaign rally on Wednesday.

Biden’s string of errors in a speech at the Pieper-Hillside Boys and Girls Club in Milwaukee marks the latest in a litany of vocal gaffes for the Commander-in-Chief, and has contributed further to concerns over his “mental acuity” ahead of this year’s election.