A landslide victory is an election result in which the winning candidate or party achieves a decisive victory by an overwhelming margin, securing a very large majority of votes or seats far beyond the typical competitive outcome. Did not happen.
Further, as per WaPo last year:
President-elect Donald Trump and his allies have exaggerated his victory since the November election, claiming a “landslide” win and a sweeping mandate despite having prevailed relatively narrowly — assertions Trump continued to press during a pre-inauguration rally in Washington.
“We achieved the most epic political victory our country has ever seen,” Trump told supporters Sunday at Capital One Arena.
Such claims are not supported by the election results, which show a starkly divided electorate and a historically slim win by Trump. His margin of victory over Vice President Kamala Harris in the national popular vote — 1.5 percentage points — is the smallest of any president who secured a popular-vote win since Richard M. Nixon in 1968.
And though Trump won the popular vote, he did not secure a majority, coming just shy with 49.9 percent of the vote, according to certified state results compiled by the Associated Press.
Trump’s margin of electoral college victory, 86 votes, was in line with historically tight races — including 2020, 2016 and 2004 — and is smaller than the winning margins of Barack Obama, Bill Clinton, and George H.W. Bush. Trump’s margin was nowhere close to those in historic landslide elections, such as Ronald Reagan’s in 1984 and Nixon’s in 1972, who both had electoral-college margins above 500 votes.
“What’s obvious is that he won by a very narrow margin and that there is no big mandate here,” said Alex Keyssar, a presidential scholar and history professor at the Harvard Kennedy School.
Trump and his allies have pushed the “mandate” narrative over the past two months as they have prepared for his return to the White House on Monday, including in social media attempts to influence House and Senate members.
https://www.washingtonpost.com/politics/2025/01/20/trump-election-results-popular-vote/