US midterms: When will we know who controls Congress?

The timing for determining control of Congress after the midterm elections depends on the closeness of the races. Results for the House may be known by tonight, while Senate outcomes could take longer. Democrats need 218 seats in the House and 51 in the Senate to gain control. Key states like North Carolina and Ohio will be crucial for Senate results, with tight margins reported in several races. Initial results will start coming in as polls close, with significant updates expected throughout the evening. Scenarios range from early Democratic control to prolonged uncertainty depending on key races in Maine and Alaska.