A 30-year old Democrat is leading the race to win a seat held by Republicans for almost 40 years.

For many it is seen as a referendum on President Trump and a sign of the Democratic Party's chances in 2018.

But Jon Ossoff needs to get over 50% of the vote in Tuesday's election to avoid a run-off.

The BBC's Rajini Vaidyanathan reporters from Georgia.

Produced by John Parks and Sam Beattie.