Former President Donald Trump was criminally indicted last week by President Joe Biden's Justice Department in relation to his alleged mishandling of government documents after leaving the White House.

First lady Jill Biden, speaking to Democratic donors on Monday, said that she found it to be "shocking" that so many of Trump's Republican supporters are still backing him following the indictment, Breitbart reported.

She would go on to sharply criticize the former president and the "MAGA Republicans" who support him and urged backers of President Biden to do everything possible to support his re-election and avoid a return to the "dark days" when Trump was in the White House.

First lady Biden trashes Trump, his supporters

According to the Associated Press, first lady Biden addressed Democratic donors during a fundraiser event in New York City on Monday, the first of a series of campaign fundraiser events she will embark upon this week, including multiple events in California, as part of her solo effort to rally support for President Biden's re-election bid in 2024.

During her remarks, Biden repeatedly drew a distinction between the "strong, steady leadership" evinced by her husband and the "chaos and corruption, hatred and division" that she attributed to "MAGA Republicans."

She also made reference to the headline of a poll she had seen before flying to NYC which suggested that Trump hasn't lost any support in the aftermath of the federal indictment, and said of the former president's backers, "They don’t care about the indictment. So that’s a little shocking, I think."

Biden also warned that "We cannot go back to those dark days" when Trump was in office and urged the Democratic donors to "think about where we were three years ago."

"We know what’s in store with the MAGA Republicans. We just know it, right? We know because we’ve lived it. We’ve seen it," the first lady said. "We know what it’s like to see U.S. policy tweeted out in late-night tweet-storms."

Poll shows strong GOP majorities think indictment is "politically motivated," still support Trump

The poll that first lady Biden may have referenced in her remarks at the fundraiser appears to be one from CBS News/YouGov, which surveyed 2,480 U.S. adults between June 7-10, with a margin of error of 2.7 percent and did follow-up calls with 1,798 respondents between June 9-10 following the criminal indictment of Trump, with a margin of error of 3.3 percent.

Among the respondents who were likely GOP primary voters -- a margin of error of 6.6 percent -- 76 percent said the indictment was "politically motivated" while just 12 percent said they indicated a "national security risk" and another 12 percent said "both" was the case.

Of those likely GOP primary voters, 61 percent said the indictment wouldn't change their opinion of Trump -- 14 percent said it changed their opinion "for the better" -- and 80 percent said Trump should still be able to be president even if he was ultimately convicted of mishandling government documents post-presidency.

Further, the pollsters found that 61 percent of likely GOP primary voters would vote for Trump if the election were held today -- a number that jumped to 75 percent when respondents were asked whether they would consider voting for any of the declared Republican candidates.

RCP polling average still shows commanding lead for Trump

According to the RealClearPolitics average of GOP primary polls, former President Trump, 52.7%, still retains a substantial lead of more than 30 points over his nearest competitor, Florida Gov. Ron DeSantis, 22%, while all other declared candidates were mired in the low single-digits in terms of support.

However, the CBS News/YouGov poll is the only one to date to have been released following the federal indictment, so it remains to be seen if that poll showing a bump upward in Trump's support is an outlier or will be matched with similar boosts for the indicted former president when other polls are released in the near future.