# ##ley is considered the key London marginal of Croydon in politics . He asked constituents to send letters to friends supporting his re - election . But he said not to ' mention the Conservative Party or David Cameron '
Gavin Barwell is fighting the key London marginal of Croydon in May . He asked constituents to sign letters to friends supporting his re-election . But he said not to 'mention the Conservative Party or David Cameron '