While the Wairarapa electorate has had Act candidates standing in the three previous elections, there is no candidate this time.
There are also no candidates for Napier or Tukituki.
Dr Whyte told Hawke's Bay Today this was because: "We haven't been able to find someone who meets our standards. It's disappointing."
Instead, Act is focusing on rebuilding itself.
Following on from his talk, he issued a press release about stock rustling, which he said needed to be taken seriously by the current Government.
He said the recent theft of sheep from a central Auckland park highlighted what was a "daily occurrence" on New Zealand farms.
"Organised stock thefts can earn rustlers hundreds of thousands of dollars.
"It is time we sent professional burglars and rustlers, often they do both crimes, to jail."
Act would introduce a new offence called "aggravated stock theft" when a firearm, knife or other weapon is present, increase prison sentences, and confiscate vehicles and firearms.
"Three strikes has dramatically reduced violent crime and will do the same for the often cruel crime of rustling," said Dr Whyte.
Federated Farmers estimated nationally stock theft could cost up to $120 million a year.