Mr McPhee said an asset Mr Holmes would take with him to the council table should he stand and be elected would be having a farming background.
Wairarapa has only one of 13 councillors on council but with its large land area is heavily populated by farming families.
Mr McPhee began his local government career when elected to Carterton District Council in 2001.
He brought with him the reputation of being a colourful character not inclined to convention, and a confirmed lover of Harley-Davidson motorcycles.
In 2004 he successfully sought the mayoralty, defeating sitting mayor Martin Tankersley, and held that position for two terms, handing over the reins to Ron Mark in 2010.
Stepping down from the mayoralty Mr McPhee said he had headed a "great council".
"We all work together, never had a lot of division and I never had to use my casting vote," Mr McPhee said.
He then switched his attention to the regional council and was elected to represent Wairarapa ahead of two other candidates, Ian Buchanan and Robert Cameron.
At the time when the Wellington super-city merger option became a major issue Mr McPhee - never one to hide his light under a bushel - was a vocal critic of those who held the view Wairarapa could not stand on its own two feet. In 2013 he sought a second term and headed off John Dalziell and Andrew Stewart to retain his council position.
Mr Holmes has not categorically stated he will quit as a district councillor in favour of the regional council but has confirmed he is looking at doing so.