Former President Barack Obama recorded a get-out-the-vote call for Democratic Alabama Senate candidate Doug Jones, CNN reports. In the pre-recording, he implores voters to go to the polls Tuesday to reject the candidacy of Republican party member Roy Moore. Obama's involvement is just the latest in a combined, aggressive Democratic effort to counter President Donald Trump's full endorsement of the controversial Republican candidate.

"This one's serious," Obama says in the call. "You can't sit it out."