President Trump heads into the final, frenetic 48 hours of campaign 2020 having lost ground among key groups that powered his drive to the presidency four years ago, the final USC Dornsife poll of the election shows.

Former Vice President Joe Biden leads Trump by double digits nationally — 54% to 43% in the poll’s daily tracking, a margin that has remained almost unchanging since summer. Biden’s support has ticked down just slightly from the high it reached after the first debate between the two candidates in late September; but overall, the poll has barely budged since USC began its daily tracking of the race in August.

That’s consistent with most other major surveys. The final NBC-Wall St. Journal poll of the campaign, for example, shows Biden leading 52% to 42%, a result nearly identical to what that survey found in January.

“So much has happened in the past 10 months of this year — impeachment, George Floyd’s murder, Black Lives Matter, fires and floods, RBG’s death, and yet the presidential trial heat has not changed,” veteran Democratic pollster Peter Hart, who oversees that poll with Republican pollster Bill McInturff, wrote in an email. “The voters know the stakes, they care and they have been very consistent and constant in their vote since January.”

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