Mr Prayuth and his United Thai Nation party is hoping there is still sufficient animosity towards Mr Thaksin among conservative Thais to give him a shot at keeping his job.

Thailand’s current constitution – written by the military – could make it hard for the opposition to form a new government.

In the end, though, this election is really about one thing: can Pheu Thai win by a sufficiently large margin to ensure it takes power again? Nearly every poll is predicting that it will once again be the largest party, as it has been in every election for the past 22 years, relying on strong loyalty to Mr Thaksin in the north and north-east.

Some think Pheu Thai may even win an outright majority of seats in the lower house. But that may not be enough, given the enduring animosity towards Mr Thaksin and his allies from conservative royalists and the military.

In the past, judicial rulings or military coups have prevented three Thaksin-backed governments, including one led by his sister Yingluck, from completing their term. Mr Prayuth has been in power since leading the coup against Ms Yingluck’s government nine years ago.

Mr Thaksin has been in exile since he was deposed by a military coup in 2006, avoiding a list of criminal charges, even as many of his lieutenants are now banned from politics.

Yet he is still there, hovering over this election like a ghost, his 36-year-old daughter being the latest Shinawatra family member to front the party.

Speaking on Friday at an event to introduce Pheu Thai’s candidates, Ms Paetongtarn said she was confident of winning the election by a landslide.

After the last coup, the military resolved to finish the Thaksin problem once and for all by rewriting the constitution to ensure his party could not take power. They appointed 250 senators, most of whom are presumed still to be loyal to Generals Prayuth and Prawit Wongsuwan, the men who led the last coup.

With the senators’ backing, and after a good deal of manoeuvring, Pheu Thai was kept out of office at the last election in 2019. The two generals have led a fractious conservative coalition since then.

However they now each head their own parties, at risk of dividing the conservative vote.

Under the military-drafted constitution, the senators can still vote one more time on the choice of the next prime minister. With their support, the two generals could still form a government even if Pheu Thai does win a majority.

This being Thailand, no-one can rule out another extra-parliamentary move against the party; not a coup this time, but perhaps another party dissolution by the reliably conservative courts.