PHILADELPHIA — President Barack Obama talked up his former No. 2, Joe Biden, and slammed the former vice president’s Republican opponent, President Trump. How much it helps in the campaign’s final 13 days remains to be seen.

While Obama encouraged Philadelphians to vote early for the Democratic presidential nominee at a drive-in get-out-the-vote rally in the parking lot of Citizens Bank Park, the home of the Philadelphia Phillies, there’s little question that Biden will dominate the city of Brotherly Love.