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US midterm elections results: How the parties are doing in maps and charts
Analysis of key races, issues and exit poll findings in the US midterm elections.
Politics
The Senate is in the balance
The Democrats are trying to hold on to control of the Senate, the upper chamber of Congress.
Before Tuesday's election the Senate was split 50-50 but the Democrats had control through the casting vote of the vice-president Kamala Harris.
With only a few seats left to call the Democrats have taken Pennsylvania, John Fetterman beating Trump-endorsed candidate Mehmet Oz. They have also held onto New Hampshire where the Republican candidate had been polling well.
In Georgia, one of three remaining states that could decide which party controls the Senate, along with Nevada and Arizona, 97% of votes have been counted. With neither party hitting 50%, Georgia will be decided by a run-off election on 6 December.