STEVE PEOPLES
AP National Political Writer
WASHINGTON (AP) — New uncertainty hangs over the Democratic presidential primary as 10 candidates meet on the debate stage once again.
No longer is there a clear front-runner. The fight for African American voters is raging. And there are growing concerns that impeachment may become a distraction from the primary. Those issues and more will play out Wednesday night when the Democratic Party's top 10 face off in Atlanta just 75 days before primary voting begins.
Seven big questions heading into the debate, to be carried on MSNBC:WHO IS THE FRONT-RUNNER?
Turbulent polling across the early voting states has created a murky picture of the top tier of the 2020 class. As much as Joe Biden is still a front-runner, so are Elizabeth Warren, Pet
