A capital gains tax is a no-brainer, according to a former Labour Party leader. 

The topic is understood to be on the agenda at the party's conference in Christchurch this weekend, with members deciding whether to continue work on the proposal. 

David Cunliffe told Mike Hosking he believes most in the party would be keen on the tax. 

When it comes to voters, he says that capital gains taxes have actually polled really well in the last couple of elections, and one could say that its polled better than the Labour Party. 

Cunliffe says that it’s unlikely to be a net vote loser. 

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