Two woman MPs past and present from the same constituency in London’s East End have been announced as spokespeople for the campaign for a ‘Yes’ vote in the national referendum on the alternative voting.

Bethnal Green & Bow MP Rushanara Ali has joined Baroness Oona King—who represented the same constituency from 1997 to 2005—in the battle for the hearts and minds of the electorate on May 5.

Both women are taking a leading role in Labour’s ‘Yes’ campaign to change the voting system in General elections to include secondary and other ‘alternative’ votes and will be taking part in debates in the media.

The campaign points out that 31 of the 73 seats in London are held by MPs elected on a minority mandate, with less than half the votes in their constituencies.