Lucy Connolly is set to speak on the final day of the Reform UK party conference in Birmingham.
The 42-year-old childminder was released from prison last month after serving part of a 31-month sentence believed to be the longest handed down in Britain for a single social media post.
She had pleaded guilty after posting a comment in the aftermath of the Southport attack which wrongly claimed the killer, Axel Rudakubana, was an illegal immigrant.
The tweet, which also called for mass deportation and incendiary action against asylum hotels, was deleted after three hours but had already been viewed more than 300,000 times.
In her first interview after her release, Connolly accused Sir Keir Starmer of holding her as a political prisoner.
At the conference, she will appear on stage during a live recording of The Telegraph’s Planet Normal podcast with Allison Pearson and Liam Halligan.
Party leader Nigel Farage and deputy leader Richard Tice are also due to close the event with keynote speeches.
Reform UK currently holds a commanding lead in opinion polls, averaging more than 10 points ahead of Labour.
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