Georgia vote is most expensive election in history

More than $40m (£31m) is expected to be spent on a congressional race in the state of Georgia, making it the most expensive US election race ever.

The seat has been held by the Republican party for decades, but Democratic challenger Jon Ossoff hopes to use it as referendum on President Donald Trump.

The next most-expensive House race was Speaker Paul Ryan’s $19.8m victory last year, according to the Center for Responsive Politics.