Kornacki: New poll shows Biden’s debate performance reinforced concerns about his age

Public Opinion on Biden's Candidacy
- Recent polls indicate a decline in support for Biden running for president.
- In February, 37% of voters supported Biden's candidacy; this dropped to 28% post-debate.
- By comparison, 46% of respondents think Donald Trump should run for president.

Debate Impact and Party Sentiment
- 64% of respondents believe Biden should step aside following the debate.
- The significant concern within Biden's own party is notable.

Age Factor in Biden's Campaign
- A Gallup poll shows 67% of voters consider Biden too old to be president, a higher concern than for Trump.
- Historical comparison shows Biden's age concern is unprecedented compared to other older nominees.

### Polls and Election Forecasts
- Post-debate, Trump leads Biden by two points in a New Hampshire poll.
- This is a notable shift from 2020 when Biden carried New Hampshire by 7.5 points.

Vice President Harris' Favorability
- Polls indicate Kamala Harris' favorability is slightly lower than Biden's.
- Democrats face a dilemma if considering replacing Biden with Harris due to her weak favorability numbers.