Many of the party's newly-won suburban House districts are previous GOP strongholds that flipped by tiny margins. Republicans are already preparing to take them back.
In 73 of the most competitive House races, Democrats raised more than $62 million from donors who gave $200 or less while Republicans raised barely $27 million.
In Florida's close races, Republican candidates performed better with Latino voters than the GOP typically does. Their victories provide lessons for both parties to compete for a changing electorate.
Peer-to-peer texting, also called P2P, is becoming a key component of most campaign toolboxes, and is slowly eclipsing other social media methods as a means to use technology to promote campaigns.
Perhaps more than any other state in the last decade, Georgia has put new restrictions on voting, which became a central issue in the recently concluded governor's race.
There will be no Republican members of Congress from Orange County, Calif. It is a stunning turn for a county that was once the heart of the state's GOP.
GOP Sen. Cindy Hyde-Smith is facing controversies involving uncomfortable questions around race ahead of a runoff election in Mississippi against Democrat Mike Espy, who is African-American.
Montana Sen. Jon Tester won his third term in the Senate. He was one of the few Democrats in a red state to survive a reelection bid this cycle and speaks with NPR's Ari Shapiro about how he did it.
Democrat Stacey Abrams isn't backing down from her fight against what she calls voter suppression tactics and election mismanagement after losing the Georgia governor's race.
Florida's recount process was marred by accusations of incompetence, antiquated voting technology and even a ballot design issue that some Democrats believe cost them a Senate seat.