Blue tsunami: Democrats gain control of both US House and Senate in midterm elections

The US Congress turns blue as the Democrats seize control of both the Senate and the House of Representatives, following key gains in the midterm elections. The landslide win reverses control of the current Republican-held chambers and could make it harder for the US president and his party to pass legislation without pushback. Although President Donald Trump was not on the ballot, the midterms were seen as a report card on how his administration has performed over the past two years. Analysts have referred to the results as a clear "blue tsunami" and a rejection of Republican governance. Rani Samtani and Kate Fisher report.