Despite his thumping wins in New Hampshire, South Carolina and Nevada, Donald Trump’s bid for the presidency could easily be swiped by either of the remaining Democrats.

A new poll from CNN released on Super Tuesday found that Hillary Clinton, who is ahead in the race, would have a tougher time getting to the White House if the Republican nominee was either Ted Cruz or Marco Rubio.

Ms Clinton tops Mr Trump at 52 per cent to 44 per cent among registered voters, tilting in Ms Clinton’s favour since January.

The margin narrows against other Republicans. Mr Rubio would gain 50 per cent of the votes versus Ms Clinton’s 47 per cent – unchanged since January. Versus Mr Cruz, Ms Clinton holds 48 per cent to his 49 per cent.

Bernie Sanders, however, tops all three Republicans by a wide margin: beating Mr Cruz by 17 per cent, Mr Trump by 12 per cent and Mr Rubio by 8 per cent.

The Vermont Senator is more popular than Ms Clinton among men, younger voters and independents, the poll found, but is still lagging Ms Clinton is the overall race.

He took to Reddit this week to encourage voters to go the polls in a bid to swing the results on 1 March, telling social media users: “You have always supported me since this campaign first began, and for that, I thank you.”

What is Super Tuesday?

Mr Sanders is the only candidate to be seen favourably by the majority of registered voters. A total of 60 per cent of voters view him favourably and only 33 per cent negatively.

When it came to the economy, terrorism and immigration, Mr Trump was selected by voters as the best man for the job. Yet Ms Clinton was the preferred choice for health care, race relations and foreign policy. Both candidates were viewed on equal terms when dealing with gun control.

But the economy remains the most important issue for almost half of voters, followed by 19 per cent citing health care, 14 per cent terrorism, 10 per cent foreign policy and 8 per cent illegal immigration as the number one concern.