Kamala Harris (L, Front) is sworn in as the 49th Vice President of the United States in Washington, D.C., the United States, on Jan. 20, 2021.(Photo: Xinhua)

One day after US President Joe Biden announced his decision to quit the US presidential race and endorse Vice President Kamala Harris, Harris on Monday secured enough support to become the Democratic nominee for the upcoming presidential election, US media reported. 

Harris quickly locked up the support of her party's donors, elected officials and other leaders, the AP reported. No other candidate was named by a delegate in the survey and Harris now appears to have the backing of more than the 1,976 delegates she needs to claim the nomination.  

In hitting out at Republican nominee, former president Donald Trump, Harris said "I know Donald Trump's type" in a meeting with campaign staffers on Monday, Politico reported. "I'm a prosecutor, and he's a convicted felon," she said. 

In a Washington Post average of 11 post-debate polls, Trump edged out Harris by 1.5 percentage points, only slightly less than his 1.9-point lead over Biden in the same polls. 

And CNN's polling in late June tested Biden's support against Trump in the wake of the presidential debate, and it also looked at how Harris would fare in a hypothetical matchup with the former president.

Overall, Harris held 45 percent support to Trump's 47 percent among registered voters nationwide, a result with no clear leader, within the poll's margin of sampling error. Biden trailed Trump by 6 points in the same poll.

CNN pointed out that Harris outperformed Biden against Trump among women - notably among women of color and suburban women - and political independents, and she held an advantage over Trump among voters who said they were not fully locked into their presidential choices.

After Biden endorsed Harris, it is highly likely that the Democratic Party will prioritize the bigger picture and support Harris as the Democratic candidate, observers pointed out.

It is time for the Democratic Party to determine a better strategy to face Trump head-on and to prepare for the potential second presidential debate. Still, the Democrats are facing several challenges, including whether Harris can quickly establish her authority and recognition among party members and the electorate, and whether the Democratic Party can develop a better strategy to attack Trump after changing the nominee, observer said.

The analyst noted that Democratic Party has been heavily criticizing Trump during the campaign, accusing him of being a "criminal" and "undermining democracy." 

However, after the assassination attempt on Trump, some Republicans claimed that Biden's campaign rhetoric led to the shooting, which has significantly hindered the effectiveness of the Democratic Party's campaign strategy in the short term. 

Some US media such as Politico forecast that in most areas, Harris would likely continue many of Biden's foreign policy objectives.  

A Harris administration would probably offer strong support for Ukraine's war effort and continue initiatives to deepen alliances in Asia and the Pacific "in the face of China's geopolitical ascendance," US media said.

And she would likely still see the US providing robust support to Israel and other allies in the Middle East, Politico said.