An NPR analysis finds 70 House districts where Democrats and Republicans are each investing more than six figures in advertising during the final few days of the election, including in deep red areas.

(Image credit: Charlie Neibergall)

Mississippi has the largest proportional Black population in the country. It's one reason the U.S. Senate race has seen millions in last-minute spending and high-profile campaign visits.

(Image credit: Stephen Fowler)

In a sign of the potentially dire midterm political environment, Republicans have spent millions of dollars playing defense in Arkansas, one of the most conservative states in the country.

(Image credit: Stephen Fowler/NPR)

A new poll shows record support for Democratic congressional candidates ahead of the midterms, as voters feel the party is better attuned to handling their top issues.

(Image credit: Andrew Harnik)

Kansas voters could send a Democrat to the Senate for the first time in nearly a century — and flip the governor's office back to Republican control, even in what could be a tough year for the GOP.

(Image credit: Stephen Fowler)