WASHINGTON (AP) — President Joe Biden and Vice President Kamala Harris thanked deep-pocketed Democratic donors who raised record sums in last month’s election loss to President-elect Donald Trump. The leaders of the outgoing administration at a Democratic National Committee holiday reception on Sunday urged the party’s important financial backers not to lose hope and to remain politically engaged. The Democratic Party needs the key donors to stay committed as it tries to pick up the pieces after Republicans took the White House and Senate while maintaining control of the House. Biden told the audience that “we all get knocked down,” but “the measure of a person or a party is how fast they get back up.”