Elizabeth Warren is seeing a boost in the polls, closely followed by Pete Buttigieg, Kamala Harris, and Beto O'Rourke. However, Joe Biden and Bernie Sanders still maintain a significant lead. Biden's support among black voters is crucial, as it was for Barack Obama in 2008. If Obama endorses Biden, it could solidify his nomination. However, Biden's record on racial issues may come under scrutiny from Kamala Harris and Cory Booker. Additionally, Biden has strong support from seniors, while Sanders struggles with older voters.
