US Democrats have elected the former Labour Secretary, Tom Perez, as chairman, choosing a veteran of the Obama administration to lead the task of rebuilding the party and heading the opposition to Republican President, Donald Trump.

Members of the Democratic National Committee picked Mr Perez on the second round of  voting over US Representative, Keith Ellison, a liberal from Minnesota.

Following one of the most crowded and competitive party leadership elections in decades, Mr Perez faces a challenge in unifying and rejuvenating a party still reeling from the loss of Democratic presidential candidate, Hillary Clinton.

Mr Perez immediately made Keith Ellison, as his deputy. Mr Ellison was the first Muslim elected to the US Congress.

After losing the presidency and failing to recapture majorities in Congress, party leaders are anxious to channel the growing grassroots resistance to Mr Trump into political support for Democrats at all levels of government across the country.

Accepting his new position, Mr Perez described Donald Trump as the worst President in US history.