Vice President Kamala Harris has a marginally better chance than President Joe Biden of winning the Electoral College in a 2024 race against Donald Trump, according to analysis.

Polling website 538 looked at whether Harris would be a better candidate than Biden against Trump in November amid suggestions she should replace the president as the Democratic Party's 2024 candidate in the wake of Biden's stumbling CNN debate performance.

Using the "limited, imperfect" swing states polling data available to expand nationally, 538 suggested that Harris has a "slightly higher" chance than Biden of winning the Electoral College against Trump. The site gives Harris a 38-in-100 probability of beating Trump in November, compared to 35-in-100 for Biden.

When broken down further, 538 predicts that Biden has a better win probability over Trump than Harris in the key battlegrounds of Arizona (31 percent to 27), Pennsylvania (40 percent to 33) and Wisconsin (41 percent to 31).

The polling site says Harris has a better chance than the president of beating Trump in November in Georgia (30 percent to 27), Michigan (43 percent to 41) and Nevada (42 percent to 31).

However, using 538's full forecast model, which takes into account "fundamentals," such as changes in economic conditions and other political indicators, Biden is considered the better candidate than Harris to face Trump.

When these fundamentals are included in the prediction, Biden has a 48-in-100 chance to win the Electoral College, with Harris down to a 31-in-100 chance.

The full forecast also suggests Biden has a double-digit lead over Harris in terms of the probability of beating Trump in all but one of the six key swing states.

Newsweek reached out to the Biden-Harris campaign team via email for comment.

G. Elliott Morris, a data journalist at 538, suggests that one of the fundamentals meant to favor Biden—that he is the incumbent heading into November—may not be a factor when considering whether Harris is a better 2024 nominee for the Democrats.

"One factor our model does not consider is whether presidents' approval rating and economic growth impact incumbents running for reelection more than non-incumbents running from the same party, and that may actually push Harris' numbers over Biden's," Morris wrote.

"In other words, your mileage may vary depending on how much you believe that Biden should get a boost because he's the sitting president. There is no objectively correct answer here; one of the reasons election forecasting is hard is that it requires judgment calls like these."

Elsewhere, a DailyMail.com survey of 1,000 likely voters found that Trump would defeat Harris by 11 percentage points in a head-to-head race (49 percent to 38). The poll also said Trump would beat Biden by a narrower five-point margin (47 percent to 42).

Overall, 538's live national average poll tracker says Trump is 2.3 percent ahead of Biden in the polls (42.1 percent to 39.8).

This is an increase of 2.1 points for Trump compared to the pair's average poll scores prior to the live presidential debate on June 27.

Biden and his team have dismissed suggestions that he will end his reelection bid in the wake of the worrying debate performance.

Harris has also said she is still backing Biden in his 2024 campaign.

"Look, Joe Biden is our nominee. We beat Trump once, and we're going to beat him again," Harris told CBS News on Tuesday.

The remarks were in response to Texas Representative Lloyd Doggett becoming the first Democratic lawmaker to publicly call on Biden to end his 2024 campaign.