National's momentum has slowed after its $4 billion blunder.
The Party's promise to claw back $19.1 billion by ending Super Fund contributions was wrong - because Treasury's Pre-election Economic and Fiscal Update only showed $15 billion.National Finance spokesperson Paul Goldsmith called it an "irritating mistake".
Bu NewstalkZB Political Editor Barry Soper told Heather du Plessis-Allan it's more than that.
"They model themselves as the party that can handle the economy and make big economic decisions and make them stick.
"What did they do with this one? They botched it." 
Soper joined du Plessis-Allan, Trish Sherson and Chris Carter on The Front Bench, Newstalk ZB's weekly show thrasing out the big political issues in the lead up to Vote 2020. There's no holding back, no topic off limits, and no rules in this rapid-fire, highly opinionated election podcast.
This week, the panel is discussing National's admission of a $4 billion hole in their financial plans, the Prime Minister ignoring social distancing while taking selfies on the campaign trail, and what the latest poll in Auckland Central means for the Greens.