CNBC reports that a new NBC News/Wall Street Journal poll found that former Vice President Joe Biden’s national lead over President Donald Trump jumped this month, and voters consider the Democratic challenger better equipped to handle a range of key issues than the Republican incumbent.

Biden garners the support of 53% of registered voters nationally, versus 39% for Trump, according to the survey released Sunday. The advantage of 14 percentage points in the poll, taken after Tuesday’s first presidential debate but before the early Friday announcement of Trump’s Covid-19 diagnosis, compares with Biden’s edge of 8 percentage points in an NBC/WSJ survey taken last month.

The phone survey of 800 registered voters, taken on Wednesday and Thursday, has a margin of error of plus or minus 3.46 percentage points.