At least 6 Democratic presidential hopefuls would defeat President Trump in a head-to-head matchup if it were held now, according to a new Quinnipiac University national poll that surveyed 1,214 registered voters nationwide.

The bottom line: In descending order, former Vice President Joe Biden, Sen. Bernie Sanders, Sen. Kamala Harris, Sen. Elizabeth Warren, South Bend Mayor Pete Buttigieg and Sen. Cory Booker all polled higher in a direct one-to-one matchup with Trump.

By the numbers: The phone survey, conducted June 6–10, found...

Biden 53%, Trump 40%

Sanders 51%, Trump 42%

Harris 49%, Trump 41%

Warren 49%, Trump 42%

Buttigieg 47%, Trump 42%

Booker 47%, Trump 42%

In the Democratic primary field, meanwhile, Biden still appears to be dominating. However, he has dropped from 38% in Quinnipiac's April poll to 35% in May and 30% in June. Per Quinnipiac, Democrats or those leaning to Democrat would vote for the following (out of the 24 current candidates and 14% selecting DK/NA) ...

Biden: 30% (-5)

Sanders: 19% (+3)

Warren: 15% (+2)

Buttigieg: 8% (+3)

Harris: 7% (-1)

O'Rourke: 3% (+1)

Methodology: From June 6 - 10, Quinnipiac University surveyed 1,214 voters nationwide with a margin of error of +/- 3.5 percentage points, including the design effect. The survey includes 503 Democrats and Democratic leaners with a margin of error of +/- 5.4 percentage points, including the design effect. <br/>