Simon Arthur (Liberal Democrat)
Simon Arthur, 44, was sentenced to four months after a court heard he treated his mother Isabelle "like a dog" for years.
Arthur admitted punching pensioner Mrs Arthur who uses a walking stick to get around.
Magistrates heard Arthur - a Lib Dem Prospective Parliamentary Candidate in the 2010 General Election - told his mother: "I hope you have an awful death".
Arthur was finally arrested when a neighbour called police after seeing him assault his mother on the driveway of their home.
“We hope that the publicity generated today by this case will raise awareness of elder abuse and send out a strong message that society does not tolerate cruelty towards older people."
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