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2024 House Forecast and Predictions

Last Updated: Wednesday, September 18 at 5:31 PM EDT

Our model currently predicts that Republicans have a 56% chance of winning the House.

Prediction Updates

Last updated on Sep 18 2024 by Decision Desk HQ

Harris, Trump in Lockstep as First Ballots Go Out

Less than 50 days out from the 2024 presidential election, Democrats find themselves in as strong a position as at any other point in the cycle, largely driven by their change in candidates. However, the contest remains extraordinarily close. This is the key takeaway from polling conducted after the (likely only) debate between Vice President Kamala Harris and former President Donald Trump, and in the wake of a second assassination attempt on Trump last Sunday. Both campaigns are in a crucial moment, with the first mail-in ballots already being distributed.

Kamala Harris remains a slight favorite in the race for the presidency, but the margin between her and Donald Trump is razor-thin. With Harris projected to secure 226 electoral votes and Trump 219, the outcome hinges on seven key toss-up states: Wisconsin, Michigan, Pennsylvania, Georgia, Arizona, Nevada, and North Carolina, where neither candidate holds a clear advantage. All seven of these states were decided by less than 3% in either direction in the 2020 election. With the exception of Nevada (which voted blue twice) and North Carolina (which voted red twice), the other five states flipped from Trump in 2016 to Biden in 2020.

If both candidates win all the states in their solid, likely, and lean categories, the race would come down to the seven toss-up states. Harris would need 44 electoral votes from these states to win, while Trump would need 51. Trump's most efficient path back to the White House involves holding North Carolina and flipping Georgia and Pennsylvania, which would give him exactly 270 electoral votes. Harris’s clearest path runs entirely through the Rust Belt: she would also hit exactly 270 electoral votes by holding Wisconsin, Michigan, and Pennsylvania. As a result, Pennsylvania remains the state most likely to push either candidate above that critical threshold.

House Seats Forecast

Elections will be held this November for representatives from all 435 congressional districts across the 50 U.S. states. The House Republican Conference, under the leadership of Mike Johnson since October 2023 following Kevin McCarthy's removal, and the Democrats, now led by Hakeem Jeffries instead of Nancy Pelosi for the first time since 2002, are gearing up for a highly competitive race. Although House Republicans fell short of their lofty expectations in 2022, they managed to flip nine seats, securing a majority and the Speaker's gavel. They must now defend this narrow majority against the Democrats, who hold 213 seats—just five seats shy of the 218 needed to regain control. These maps categorize congressional districts by each party’s likelihood of winning, ranging from 'safe' to 'likely' to 'lean' to 'toss-up'.

210

Democrat

Republican

215

218 for Majority

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Chance of winning the house

Our model is updated every day, blending the latest data on polls and fundraising with "fundamental" factors like incumbency and each district's partisan lean. This graph tracks each party’s probability of winning control of the House over time.

House Seats Projections

Republican: 219

Democrat: 216

This graph tracks each party’s projected seat count in the House over time.

Chance of winning each district

This chart visualizes the current probabilities of each party winning individual races. Circles positioned further to the left indicate a higher likelihood of a Democratic victory, while circles to the right suggest a stronger chance for Republicans. Use the 'DEM' and 'GOP' filters to view states most likely to support the respective parties.

House Seats Simulations

These graphs display the distribution of House seat counts from 14,000,605 simulations for both Democrats and Republicans. The lighter shaded areas to the left of the dotted line depict scenarios where a party fails to secure a majority, while the darker shaded areas to the right represent majority-winning outcomes. Each bar indicates the percentage of simulations resulting in a specific seat count.

Featured Races

Explore the latest probabilities in the most competitive presidential, Senate, and House races by selecting any of the races listed below.

Interested to see how the DDHQ/The Hill forecast works? Read our methodology statement.

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