The capital spending increase (Newstalk ZB)

(9 May 2025) Dr Oliver Hartwich told Ryan Bridge that the government's extra capital spending was a minor step and made the case for asset recycling. 

David Seymour's plan to cut ministerial portfolios (Newstalk ZB)

(2 May 2025) Newstalk ZB carried Dr Oliver Hartwich's support for David Seymour's plan to cut the number of ministerial portfolios. 

John MacDonald on cutting the number of ministers (Newstalk ZB)

(2 May 2025) On Canterbury Mornings, John MacDonald discussed Dr Oliver Hartwich's case for cutting the number of ministers and portfolios.