Synopsis The elections for the two Senate seats were held on Tuesday. With this victory, both the Democrats and the Republicans have 50 members each in the 100-seat Senate. Getty Images The Democratic Party has captured control of the Senate after winning the two seats up for grabs in runoff elections giving President-elect Joe Biden a majority in both houses of the US Congress. The Democratic Party has captured control of the Senate after winning the two seats up for grabs in runoff elections in the key state of Georgia, giving President-elect Joe Biden a majority in both houses of the US Congress and delivering a setback to President Donald Trump in his last days in office.