Michael Laws has put his local body campaigning on hold with news his former partner and mother of his three youngest children has suffered a severe stroke.
Mr Laws said doctors had told him that Leonie Brookhammer, 44, was expected to be hospitalised for some weeks.
Both he and Ms Brookhammer share parenting of the children - Lucy, 8, Zoe, 7, and Theo, 4 - and he said his immediate priority was their care for the foreseeable future.
"They need their dad just now," he said.
Mr Laws said this meant his campaigning for the Wanganui mayoralty, as well as a seat on the district council and the Whanganui District Health Board, would be suspended until further notice.