Two days after Election Day, three Senate races and 13 House races remain unresolved. A runoff later this month will determine the winner of the Senate race in Mississippi.

House Democrats have already passed the threshold for a majority by winning 225 seats so far, wresting control of a chamber they haven’t held since 2010. Based on current projections, they could obtain as many as 234 seats — good for a 33-seat majority — though it is more likely they’ll land somewhere around 228 seats for a still-significant 21-seat margin.

In the Senate, the GOP not only held the line, but managed to flip Indiana, North Dakota and Missouri, states that President Donald Trump won by double digits in 2016.

Here are the outstanding races that will determine the size of the Republicans’ majority in the Senate and the Democrats’ majority in the House:

Florida

Senate

After three full terms (18 years) in the upper chamber, Democratic Sen. Bill Nelson of Florida called for a recount Wednesday after Republican Gov. Rick Scott declared victory Tuesday night. As of 9 a.m. Thursday, Scott led Nelson by 30,264 out of more than 8.1 million votes with all precincts reporting. State officials still need to count or verify straggling absentee and provisional ballots.