While I agree with Kemi Badenoch in principle, Yes, if people make mistakes, they should be allowed to realise the error of their ways and move on. but, but, but.......
......from what I have read, this man was convicted on two occasions, one for posting antisemitic material and then, far mores seriously, for racially harassing a female Jewish MP. As I read it, he spent three years in prison, which means, I presume, a sentence of around 5 years. To get that kind of sentence for what he did, means his crime was considered to be on the serious end of the spectrum. He completed his sentence about 8 years ago,
No, I am sorry, it is far too soon for a man like this to be seeking public office, 20 years after his conviction, it might be possible, but not now.
The best neutral comparison I can make is the case of someone in a financial post who defrauds their employer and serves a prison sentence. That sentence will not bar that person returning to society and rebuilding their career and life, but no employer will give them a job that means they have access to the financial system for a very long time, if ever. Certainly not eight years.