Inside the Decision Desk: When will we know Senate and House control?

Key Points:

• In the 2024 midterm elections, Democrats are favored to gain control of both the House and Senate, but final results may take time due to close races and varied vote counting speeds across states.
• Senate control hinges on eight key battleground races, with Democrats needing to win five; fast-counting states like Iowa and Texas may yield early calls, but slow or ranked-choice voting states such as Alaska and Maine could delay final decisions for days or weeks.
• House control depends on a net gain of three seats for Democrats, with the potential for either a large Democratic majority or a narrow margin, impacting the speed of projections; ranked-choice voting in Maine and Alaska may also delay final House control outcomes.
• Early indicators from fast-reporting districts in Kentucky and Florida could provide clues on overall House control, with close or decisive results in these areas potentially forecasting the broader national outcome.
• NBC News Decision Desk uses statistical models and vote counts to estimate seat totals throughout the night but may not be able to project final control of Congress until several days after Election Day, especially if races remain tight.