Biden is going to need to reach out to Muslim, Black, Latino, and Asian voters. Any one of them, on their own, won't swing the election, but a combination of them deciding to just stay home will give us Trump 2.0.
"In fact, Trump appears to have gotten more, not less support from American Muslims. Associated Press exit polls show 35% of Muslims voted for Trump and 64% for Joe Biden. A separate poll from a Muslim civil rights group found that 17% of Muslims voted for Trump, but that was still up by 4 percentage points from its poll in 2016.
Muslims make up a small percentage of the population, but their vote is key in states such as Michigan. It's a state where Biden won by about 155,000 votes. Trump won Michigan in 2016 by under 11,000."
"In Obama’s first presidential campaign, 95 percent of Black male voters and 96 percent of Black women chose him. Four years later, support from Black women remained at 96 percent for Obama’s 2012 re-election, while the figure for Black men slid to 87 percent.
In 2016, when the nominee was Hillary Clinton, Black men dropped further to 82 percent while Black women’s support for Clinton remained high at 94 percent. Biden came close to matching that this year, garnering the support of 91 percent of Black women."
https://www.politico.com/news/2021/06/30/new-trump-poll-women-hispanic-voters-497199
"But Biden only won Hispanic voters by 21 points, 59 percent to 38 percent, down significantly from Clinton’s 38-point advantage, 66 percent to 28 percent. There was a slight gender gap — Biden won Hispanic men by 17 and Hispanic women by 24 — but Trump surged broadly among Hispanics, especially among Hispanic voters without a college degree.
Trump “had about a 10-point gain from 2016 to 2020 in the share of Hispanic voters who supported him,” said Ruth Igielnik, a senior researcher at Pew."
Biden won the Asian demo 63-31, but that's down from Clinton's numbers of 65-27. Trump actually did better against Biden despite the anti-China rhetoric and rise in attacks on Asian citizens.
"While Biden performed well among Asian Americans, the data suggest that Trump didn't lose support with the group, either. Paul Ong, a research professor at the UCLA Luskin School of Public Affairs, said he expected more movement away from Trump because of his use of xenophobic and discriminatory language to describe the pandemic, such as "kung flu" and "China virus."
Ong said that during the pandemic, anti-Asian sentiment across the country has contributed to both hate incidents as well as an unprecedented increase in Asian American unemployment and business closings."