Follow NPR’s coverage right here to learn what’s at stake, see what it looks like on the ground and track live results Saturday evening.

The investment marks the largest voter engagement and turnout operation in the history of the Service Employees International Union, which claims nearly 2 million members.

The Department of State is urging schools to join a competition to see who can get the most students on the rolls for November’s election.

A West Philadelphia Democrat who has worked most recently as a union business agent won a special election Tuesday to fill a vacant seat in the Pa. House.

The backing could provide a much-needed boost for the former vice president heading into South Carolina's primary.

Democrats held their final debate before the South Carolina presidential primary and the critical Super Tuesday contests that follow three days later.

Moderate Christina Finello and progressive Skylar Hurwitz disagree on a lot of things, but they agree on the need to oust Brian Fitzpatrick.

A lot is on the line in the 2020 primary debate. It might be the last chance for moderates to slow Bernie Sanders' momentum. And who comes out better — Biden or Bloomberg?

The attacks underscore how seriously Democrats are taking the former New York mayor’s campaign, now that he’s rocketed to double-digit support in national polls.

For Mike Bloomberg, the one-way conversation with Democratic voters is about to end.

The state is expected to be one of the nation’s premier presidential battlegrounds.

Naturalized citizens have been adding to the voter rolls in swing states since the last election cycle. Could they make a difference in Pennsylvania for 2020?

“He saw the campaign logo and pulled out an AR-15,” said one young hopeful about his experience campaigning in New Hampshire.

A nonprofit group wants to see more unmarried women, young people and people of color on the nation's voter rolls, so it recently sent 9 Million letters urging registration.

Ready in time for the PA primary, officials promise the revised edition will actually stick.