Voters went to the polls Tuesday in Texas, North Carolina and Arkansas. The results could help determine control of Congress and how people feel about Democratic and Republican party leadership.

Kenyan McDuffie and Janeese Lewis George, the two top Democratic contenders in the June primary, differ on how to solve soaring energy costs and other expenses.

NPR is standing up for the public's right to ask hard questions in a national campaign dubbed "For your right to be curious." At NPR's headquarters, on billboards in New York City, Chicago, and ...