As he mounts another run for president, Donald Trump is still the same man - aggrieved, petulant and tunnel-focused on his political standing.
It's the electoral landscape around him that has changed.
After Republicans' underwhelming performance in the 2022 midterm elections, people in the party are increasingly want to look forward, not back.
His potential rivals, notably Florida Governor Ron DeSantis, have been sparking enthusiasm among Republican voters and, just as importantly, raising money from enthusiastic donors.
DeSantis thrashed his Democratic opponent to win re-election last week, while many high-profile Trump-backed candidates lost their races.
In an Election Day exit poll published by Edison Research, six out of 10 respondents said they had an unfavourable opinion of the former president.
Trump faces huge challenges on multiple fronts: civil and criminal investigations, and a stream of damaging revelations in a congressional inquiry about his efforts to hold onto power despite losing to Joe Biden in the 2020 presidential vote.
In August, he became the subject of a federal criminal probe into a trove of top-secret documents he was keeping at his Florida home. Trump has claimed he was in lawful possession of the papers.
He no longer has access to his main communication platform - his Twitter account - which he previously used to mobilise zealous supporters and attack perceived enemies.
This could change, with Twitter's new owner, Elon Musk, suggesting he could restore the former President's account.
Trump does retain strong advantages going into a 2024 Republican primary: He remains the most dominant force in the party, he has legions of admirers and he has emerged triumphant from previous setbacks.
He also was sitting on a stockpile of about 77 million dollars as of last month, although election rules would make it difficult for him to access it.
Seven years ago, when he launched his successful presidential bid, Trump the showman and Trump the mogul were known quantities to voters, but who he was as a politician was an open question.
Now there is little doubt, and voters have punished his party as a result, suggesting there is a ceiling to Trump's appeal.
In a series of Republican Party primaries this year, Trump played the role of kingmaker, largely succeeding in his efforts to boost like-minded candidates.
But the general election was a disaster, as Senate candidates he backed in critical states flopped and cost Republicans control of the chamber.
"It's basically the third election in a row that Donald Trump has cost us the race, and it's like, three strikes, you're out," said Governor Larry Hogan of Maryland.
Trump is also inextricably linked to the January 6th, 2021, attack on the US Capitol by his supporters attempting to prevent lawmakers from certifying Biden's victory.
Trump persists in falsely claiming he lost in 2020 because of massive fraud.
Congressional hearings into the attack have reminded voters that he appeared willing to endanger the safety of his loyal vice president, Mike Pence, who was there on the day, and to fire top officials at the Justice Department to further his unconstitutional push to stay in power.
While Trump wants to seek the Republican nomination unopposed, if rivals do step up to challenge him he would want as many candidates as possible to get into the race.
In that fractured field, a strong alternative candidate would have to emerge for him to lose the nomination.
An October opinion poll by Morning Consult/Politico showed Trump capturing more than 50 per cent of the vote among Republicans, with DeSantis at about 21 per cent.
A recent poll of Floridians by Victory Insights found Trump and DeSantis knotted at 50 per cent each.
In a sign that Trump views DeSantis as a mounting threat, he has in recent days taken to boasting at rallies that he would crush him in a Republican primary.
There is also the question of whether Trump's rightwing Make America Great Again movement, which has captured much of the Republican Party, needs him any more, becoming instead a Trumpist movement without Trump.
A new wave of candidates has echoed much of Trump's rhetoric without being saddled with his personal liabilities. At times, they have taken angrier and more absolutist positions than those of the former president.
As Florida's governor, DeSantis has fought against abortion rights, social media companies and the teaching of race and gender in the classroom. He has backed new restrictions on voting.
Other potential contenders include two rising stars - former South Carolina Governor and former U-N ambassador Nikki Haley, and South Dakota Governor Kristi Noem.
Add to the mix Pence and former Secretary of State Mike Pompeo, who may appeal more to establishment-minded Republicans than Trump does.
Trump's early announcement may be seen as an attempt to keep these potential rivals off the electoral battlefield while he remains in a position of relative strength.
He could succeed in getting Republicans behind his third presidential nomination.
It is just as possible, however, that those rivals will see a damaged candidate and smell blood in the water, leaving Trump to decide just how much he wants to do battle for the party he once unquestionably commanded.