Biden fared slightly better, with 40% of voters saying they were enthusiastic or comfortable voting for him.
The campaign also tested other Democratic presidential candidates against Trump, however, Biden polled the best of the group, according to the source.
A combined 64% of likely Democratic voters, up from 57% in March, said they were enthusiastic or comfortable about the MA senator and former Harvard law professor, a favorite among the party's progressive wing. We're winning in Florida very big'.
Asked whether the president believed there's a "real conspiracy" around polling, the US leader said: "No, I just think it's just a bad group of people and it shouldn't be allowed". When revealed, the leaked internal polls infuriated Trump.
Minnesota voters favor Warren the most at 21%, while Biden at 20% and Sanders at 19% poll close behind. "I mean it was all phony polling", the president said. "Rasmussen was. one of the most accurate polls", he maintained.
The president does not officially launch his re-election campaign until Tuesday, when he plans an elaborate, rally-style event in a huge arena in Orlando, Florida. The first Democratic debates, featuring 20 candidates over two nights, will be held June 26-27 in Miami.
Protesters refuse to leave Hong Kong streets
Protesters raise placards as they march on the streets against an extradition bill in Hong Kong . Opponents of the law fear that it can be used against opponents of the Chinese authorities.
Canada beat New Zealand to reach women's World Cup second round
But who were the biggest winners and losers from the game? It was also the first for Prince who is playing in her first World Cup. And the truth is, they didn't really look like changing that against Canada , being completely overrun by a vastly superior side.
You Can Now Read Trump’s ‘Secret Deal’ With Mexico
Photojournalists managed to capture a few sentences of the document, but the full contents had not previously been revealed. There was even criticism from some in the president's party, Morena, which holds strong majorities in both houses.
Both CNN and ABC News reported Sunday that the Trump campaign planned to part ways with some of its pollsters in the wake of the leak, which showed the Trump campaign falling behind former Vice President Joe Biden by the double digits in Pennsylvania and Wisconsin.
The CBS News/YouGov poll shows Biden had support of 31 per cent of Democratic primary voters with three USA senators next: Warren of MA at 17 per cent, Sanders of Vermont at 16 per cent, and Harris of California at 10 per cent.
Our CBS News battleground tracker shows that is the right strategy. That also includes a mix of states from New Hampshire to SC to Texas.
Mr Biden was trailed by senators Elizabeth Warren (17%), Bernie Sanders (16%) and Kamala Harris (10%).
POTUS had denied he was behind the former Vice President, who is a hopeful for the Democratic candidacy in the 2020 election, in an interview to be televised in full Sunday on ABC.
Still, the Fox poll, conducted June 9 to June 12, was welcomed by Democrats eager to chip away at Trump's popularity, particularly in battleground states such as Pennsylvania and Wisconsin. The margin of error was plus or minus 1.5 per cent.