麻豆约拍

If a candidate knowingly overspent election spending laws, or made a false declaration, they risk fines, being thrown out of parliament, or jail, which would lead to a by-election, said Bob Watt, a professor of electoral law.

Daily Politics presenter Andrew Neil also heard from Liberal Democrat MP Greg Mulholland, who sits on the party's campaigns committee, and Times journalist Sam Coates.

They were looking at claims around expenses for volunteers travelling with an election campaign bus and letters sent out in the 2015 general election campaign by the Conservative Party. Neither Labour or Tories would offer a spokesman for the programme.