without let's bring in princeton university political scientist and axiom strategies erin perrine.u for coming on. obama, a little bit late to the party. what do you think of the late endorsement? >> they obama's would argue that they did not want to put their finger on the scale in the democratic process on their party when it comes to selecting who would come after joe biden. but democrats very quickly coalesced behind kamala harris and that's why you saw the obama slowly but surely get on board and put their name behind her. it was not a ringing endorsement, they were not first out of the gait, but democrats can argue that now that they are on board, this is a complete coalescing of the party that booted joe biden, the sitting president, off the ballot and have now put kamala at the top. my bigger question is how little are we going to see of joe biden going forward because after that netanyahu meeting with kamala, she made remarks to the american people but joe biden did not. how much are we seeing a replacement of joe biden by kamala harris versus her just running as the vice

lauren wright, erin perrine, thank you. >>> meanwhile the white house press briefing had a challenge today defending biden over concerns about his mental capacity and calls from fellow democrats to drop his reelection bid. bill melugin is live with new information. >> reporter: good evening. the white house is trying to clean up concerns about president biden's cognitive decline. during today's white house press briefing our colleague peter do see pressed karine jean-pierre on why he hasn't recently been tested. >> are you guys just not since february testing president biden for parkinson's or dementia back because if he gets a bad result, it's all over? >> again, as i've said many times before, the president has had a full some, comprehensive, what we shared with you was comprehensive but he's had a full...physical. we've shown the results of those physicals this past three years. just to clear this up got the white house medical unit, his doctor, they don't believe that he needs anything more than what we have been able to provide. >> reporter: and karine jean-pierre also clarified

she just got engaged and she wants you to know it's not jamie lissow, republican strategist erin perrine the town, jonestown, new york times best-selling officer and fox news contributor kat timpf. and he uses a volcano as a fondue pot, new york times best-selling author, canadian -- comedian... tyrus. fair enough. before we get to some news stories let's do this. >> announcer: greg's leftovers. >> greg: it's leftovers where i read the jokes we did not use this week and as always it's my first time reading them so if they saw? will dress up joe mackie as a visiting angel and sent him to the white house. it is funny. in an all staff phone call made to alleviate concerns, president biden was heard saying, i'm not leaving. no one was sure if he met the presidency or this mortal coil called earth. don't use that phrase enough. online conspiracy theorists believe joe biden struggled in the debate because he was hit with a directed energy weapon. this is called havana syndrome although doctors said it's more likely he was havana stroke. that was good. was at my phone? that was funny. now if de

he's now the vice president of bose public affairs group and erin perrine, a former press communications director for the trump 2020 campaign. she's currently a republican strategists for axiom strategies. so erin is this gamesmanship or is there like a legitimate reason for trump to be sort of stepping away from this debate are threatening to its gamesmanship, right? that this resets the totality of the election for them to then say, hey, we're going to wait until democrats pick their nominee. it's a little bit of just hot air are there, but trump will debate any has to debate, especially ahead of early voting starting in late september for some of these states, you have a shorter runway now to try and define kamala harris and to pit her on positions not debating would be a catastrophe. and the trump team needs to make sure i would say and highly recommend they keep the same format they had for the last debate because no audience and muted mics worked in trump's favorite, kept him controlled and focused. >> pete, how do you see the harris element changing what it ultimately this debate,

erin perrine but it's interesting because, you know, you look at things like politico and politico had this very long story about this shift in trump, and it reads as follows quoting here gop allies in roughly a dozen interviews used words like emotional and serene, even spiritual, to describe trump. in the days since the attempt on his life, a person close to the former president's family described him taking on humility in the biblical sense. i mean, a dozen people, all with kind of the same conclusions, aaron, seems fairly significant. >> no, it is very significant. really. the american people saw a side of donald trump they have never seen before. i was in milwaukee. i saw steve while we were there. the feeling was palpable in the arena. the republican party felt the shift because you felt the shift in donald trump. and that's something that unified the party to bring us together as we are going into november. contrast that with democrats who are in complete chaos, trying to boot their own president off the ballot and see who they can try and stand up very quickly to try and beat d