(CNN) – Former Vice President Joe Biden has opened up a 15-point lead over President Donald Trump, according to a new Quinnipiac University national poll that also spells out bad news for the President on the economy, his most important selling point for reelection.
A majority of registered voters (52%) report they'll support Biden in the general election, with 37% going for Trump, a wider margin than in Quinnipiac's June poll, when 49% backed Biden and 41% supported Trump.
An NBC/WSJ poll out Wednesday also finds Biden leading Trump with an increasing margin, Biden with 51% support among registered voters over Trump's 40%. In the NBC/WSJ June poll, Biden lead Trump with 49% to 42%.
The poll also finds growing disapproval of Trump's job performance -- with a notable shift on the economy where reviews of Trump's performance have turned negative. The economy had been the only issue on which Trump earned a net positive rating in Quinnipiac's polling, but now, 44% approve while 53% disapprove of his performance.
However, the NBC/WSJ poll doesn't find the same reversal. A majority of registered voters (54%) approve of how Trump is handling the economy in that poll, 42% disapprove, steady from their February poll. Significantly fewer approve of how Trump is handling race relations (33%) and coronavirus (37%), according to NBC/WSJ.
Overall, the survey finds 36% of registered voters approve of the way Trump is handling his job generally, and 60% disapprove, compared with 42% approve to 55% disapprove in June.
The survey also finds Biden edging out Trump when voters are asked who would do a better job handling the economy -- 50% say Biden and 45% for Trump, a reversal from June when 51% said Trump would do a better job, 46% Biden.
Biden also holds broad advantages over Trump on who would do a better job addressing racial inequality (+32 points for Biden), handling the response to the coronavirus (+24 for Biden), health care (+23 for Biden), and handling a crisis (+19 for Biden).