BIDEN HARRIS

joe biden and is newly selected running mate are preparing for a joint appreance

Trump.

Nbc's scott macfarlane is covering the race from washington.

:00 :24 1:10 the historic announcement was made electronically.

Joe biden and kamala harris spoke by zoom then the former vice president tweeted harris is "a fearless fighter for the little guy, and one of the country's finest public servants" fellow democrats say harris' record and her experience in democratic primary debates will boost a biden campiagn that"s already consitently leading in polls.

(sot: senator cory booker/ (d) new jersey :24-:30) "beating donald trump gets us out of a valley, it does not get us to the mountaintop.

But biden-harris, they can help us get to the mountaintop."

About an hour after the announcement, president trump criticized the choice.

(sot: president donald trump/ no super :33-:42) "she is a big tax raiser.

She is a big slasher of funds for our military."

"plus she was very, very nasty" (trump campaign ad nats :43-:45) the trump campaign pinned a video criticizing the choice to his twitter page.

Senator harris' four years in the u-s senate included high profile questioning of then-supreme court-nominee brett kavanugh.

(democrat debate nats :56-:59) her run for the democratic presidential nomination included sharp criticism of her new running mate.

(sot: vice president mike pence/ no super 1:04-1:07) "let me take this opportunity to welcome her to the race" she'll spar this fall with vice president mike pence in a primetime debate.

(sot: senate minority leader chuck schumer/ (d) new york 1:10-1:17) "they will be a great team, she will do a great job counter-punching donald trump" the swinging from both sides