The Democratic race entered a new phase on Wednesday night as the first 10 presidential hopefuls clashed over Medicare for All in the first presidential debate.

Some of the lesser-known contenders tried to make their mark on subjects that ranged from immigration and border security to America's role in conflicts around the world.

While several figures took aim at President Trump, the entire field steered clear of attacking the Democratic front-runner Joe Biden.

The huge field was split in two, with several of the heavyweights — including Biden and Bernie Sanders — appearing on Thursday.

Elizabeth Warren, the Massachusetts senator, stood at the center of the stage as the highest polling candidate with a chance to add to her growing momentum and an opportunity to stamp her authority on the race.

But it was Tulsi Gabbard, the representative from Hawaii, who garnered much of the social media attention as viewers raved about her silver streaked hair and a poll on the influential Drudge Report site suggested she emerged as the winner.