With Election Day four days away political candidates are wrangling over the party vote, with Act Tauranga candidate Stuart Pedersen offering advice on National's campaign.

Stuart says the orange banners appearing across National billboards, stating people's party vote is crucial, does not give any advice on how to use their party vote effectively.

Stuart Pedersen at yesterday's public meeting held by Act leader Jamie Whyte.

He says a party vote for Act is more potent than a party vote for National, and will secure more right-wing MPs in Parliament.

'It takes about a third fewer votes to elect another Act MP than another National MP.

'So the same number of party votes will elect more right of centre MPs if given to Act. This little known detail of the very complicated method for allocating seats in parliament is designed to favour small parties.”

Stuart says it's the same reason John Key is asking Epsom voters to elect Act's David Seymour.

'They want another strong voice in Parliament besides their own, to counter the opposition from the left.”

Stuart says National voters should split their vote.

'Voters should ask themselves whether they would prefer more Aaron ‘Do you know who I am?' Gilmore types, or high calibre thinkers like Dr Jamie Whyte [Act's party leader].”

If Tauranga voters tick Simon Bridges for their candidate vote, and party vote Act, they are choosing a better group of MPs to make up the coalition, says Stuart.

National voters who want a continuation of a Key-led government need to understand they can be more certain of that result with a party vote for Act, he says.

But Tauranga MP Simon Bridges strongly disagrees.

'Any vote for a minor party – whether it's Act, the Conservative Party, or NZ First – risks political turmoil.

'It's only a strong party vote for National that will keep New Zealand moving in the right direction.”