US & Canada

US mid-term election results 2018: Maps, charts and analysis

In a dramatic election night President Donald Trump's Republican Party retained control of the Senate and the Democrats took control of the House of Representatives.

Map showing results for the House of Representatives, with Democrats on 231 and Republicans on 198

The Democrats gained more than the 23 seats they needed to take control of the House. It is the first time the party has held the majority in the lower house of Congress for eight years. The loss of the House will make it harder for President Trump to push his policies forward.

Map showing that the Republicans have held the US Senate after the midterm elections as they took Indiana, Missouri and North Dakota while Democrats gained Nevada and Arizona

Meanwhile, the Republicans have kept control of the Senate, the upper chamber of Congress, and will increase their majority. They gained Indiana, Missouri and North Dakota from the Democrats. The Democrats have only gained one Senate seat in Nevada.

However, three Senate seats have yet to declare. Races in Arizona and Florida have not been called and voters in Mississippi will return to the polls later this month for a runoff, after no one candidate in the special election race took more than 50% of the vote.

How the Democrats won the House of Representatives

There was talk before the election of a rising "blue wave" - Democrats increasing their vote share across the country.

Democrats increased their vote share in 239 districts. Republicans increased in 67

The Democrats increased their vote share in 239 districts, but they didn't win all of them. In West Virginia's 3rd district, there was a 20% swing towards the Democrats, but the seat still went to Republican Carol Miller.

One Democrat who substantially increased her party's share was Sharice Davids, the joint-first Native American Congresswoman. She improved the Democrats' vote by 13% to win Kansas' 3rd district.

The Republicans raised their vote share in just 67 districts.

Map showing how record number of women have been elected to the US House, with 88 for the Democrats and 13 for Republicans

There will be more women in the House than in any previous year, while the total number of women in Congress overall will be at a record high after the mid-terms, overtaking the current tally of 107.

Click on the box below for detailed results, provided by AP. Switch between the Senate, House and Governor tabs to see the state of each map, and click on states or districts to explore vote counts in individual races.

Please be aware that by using this map you're accessing AP, a third party site. They collect data about how people use their results service. This is subject to their terms and conditions and the BBC does not have access to this data.

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High turnout

The 2018 mid-terms is set to be historical for voter turnout. With just a few seats left to be re-counted, 49.2% of those allowed to vote have done so.

This is higher than any year since 1914. In 2014, just 37% of those eligible voted.

Some 115 million votes were cast in the House in 2018, according to estimates by the US Elections Project, up from 83 million in 2014.

How the mid-term elections broke records

Democrat gains

In the House, Democrats increased their vote share in hundreds of seats, with vote share dropping in just 47 seats.

Boundary changes also helped them, as changes in Pennsylvania saw them gain four seats in the state, compared to 2016.

They also gained two seats in the southern tip of Florida, a classic swing state.

Who voted how?

Compared with the last Congressional election in 2016, Republicans lost support in those counties with the most university-educated white women.

While minorities are much more likely to vote Democrat.

And in rural areas, there was strong support for Republican candidates.

President Trump's core constituencies of white working class voters also appear to have turned out for the party in House races.

Produced by Daniel Dunford, Tom Calver, Will Dahlgreen, Maryam Ahmed, Nassos Stylianou, Ed Lowther, Clara Guibourg, John Walton and Irene de la Torre Arenas.

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