US Presidential Election 2024: Kamala Harris leads Donald Trump 49% to 45%. Are Democrats happy with Joe Biden's decision?

The July 2024 Daily Kos/Civiqs Poll found that about 43% of voters have a favorable opinion of Kamala Harris, while 51% have an unfavorable opinion about her. On the other hand, as many as 42% of voter have a favorable opinion for Donald Trump while 56% have an unfavorable opinion. What will happen in the US Presidential Election 2024?