John Hirst: Voting 'a human right for prisoners'
22 November 2012 Last updated at 16:35 GMT
Former prisoner John Hirst says prisoners should be able to vote because it is their human right.
Mr Hirst, who was convicted of manslaughter in 1980, launched a legal action against the government over the ban preventing prisoners from voting.
On Thursday, Justice Secretary Chris Grayling told MPs they could vote to defy a European Court of Human Rights ruling and keep the ban on prisoners voting.
But Mr Grayling said there would be a "political cost" in doing so.