US election: 'Happy day' for Nancy Pelosi, but Lindsey Graham says 'fight hard'

Democratic presidential candidate Joe Biden has pulled ahead of incumbent Donald Trump in a number of close races that could help him secure victory in the US presidential election.

With the Trump campaign disputing the results, Speaker of the House of Representatives, Democrat Nancy Pelosi, and the Republican Senator for South Carolina, Lindsey Graham, offered their views on the ongoing vote count.