Does Labour's public transport fare cap policy add up?

The Labour Party - the biggest party in Opposition, maintaining a tight lead in this year's polls - has decided to open its election year campaign with a public transport fare cap policy: $20 a week in Auckland, Wellington and Christchurch, and $10 everywhere else. Labour's transport spokesperson, MP for Palmerston North Tangi Utikere, says the policy delivers cost-of-living relief at a net cost…