Also, a look at the history of Black support for Democrats. 

Plus, who stands to benefit most from the $2 trillion stimulus bill?

Also, a look at how states are navigating presidential primary contests in the midst of a pandemic.

Plus, why a Republican mayor in Michigan is supporting Joe Biden. 

The third episode of How to Vote in America takes a look at the history of delegates. 

It's Biden versus Sanders for the Democratic nomination. 

The second episode of How to Vote in America takes a look at the history of a primary. 

The Takeaway's Amy Walter breaks down what we learned from South Carolina, and what we know going into Super Tuesday, when a third of the Democratic delegates will be apportioned.

For the last few weeks, Joe Biden has been counting on South Carolina to save his campaign. And, last night, Palmetto state voters did just that.