Joe Biden has won the Minnesota Democratic presidential primary, edging out Bernie Sanders in a tight race.

The race was called around 50 minutes after polls closed, with Biden coming from nowhere in the polls to beat the Vermont senator.

Surely crucial to his victory was the decision by Amy Klobuchar to drop out on Monday and endorse the former Vice President.

Before the primary, Klobuchar was leading in the polls ahead of Sanders, and it seems as though a significant chunk of her probable voters switched to Biden.

Seventy-five delegates are up for grabs in Minnesota, with all candidates who receive at least 15 percent of the vote grabbing a share.

Elizabeth Warren was in third place in Minnesota, and should have enough votes to get a share of the delegates once all the ballots have been tallied.

It marks a resurgence for Biden, whose campaign was floundering after Iowa and New Hampshire, only for a dominant win in South Carolina to breathe new life into the campaign.

Biden didn't have a significant campaign presence in Minnesota, certainly not compared to Sanders, Warren, or even Michael Bloomberg, but has attracted the moderate vote following the exit of Klobuchar and Pete Buttigieg from the race.

He has also been polling better than any other candidate in head-to-heads against President Donald Trump.

Speaking of Trump, he easily won the GOP nomination in Minnesota, unsurprising given he was the only name on the ballot except for a write-in option.

Follow more live updates for Super Tuesday results around the country right here.