Channel 4 docudrama UKIP: The First 100 Days has prompted more than 700 complaints to media watchdog Ofcom since its broadcast on Monday night.
The programme depicted rioting on the streets after UKIP win the general election, mixing archive footage with imagined scenes.
Channel 4, which has defended the programme, has also had 250 complaints.
Ofcom said: “We will assess these complaints before deciding whether to investigate or not.”
UKIP party leader Nigel Farage is among those who have condemned the programme.
“Looks like 100 Days of UKIP may well have backfired on Channel 4. A biased, partisan depiction of the only party that Believes in Britain,” wrote Mr Farage on Twitter.
Speaking on LBC Radio, UKIP MEP and parliamentary candidate Gerald Batten called the docudrama “a piece of bile and vitriol from our political opponents”.
“Political debate is one thing, and having a debate where people can put another point of view, or even a factual documentary about a political party. But this wasn’t that,” said Mr Batten.
He continued: “[Channel 4] can just spout their views and don’t actually have to go out and defend them in elections, which we do.”
Channel 4 said “a lot of research” went into the film and that Mr Farage was invited to watch it before it was broadcast, and to do an interview, but he declined.
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