[8] The New Zealand television channel TV3 was banned for three days from filming in Parliament in August 2006 for showing Mark repeatedly giving the finger to another MP.

[9] In 2009, Mark told media that while he still had a subscription with New Zealand First, he was "not active", and that he would not rule out standing for Parliament with another party.

[13] However, his ninth placing on the New Zealand First list saw him returned to Parliament, and he resigned as Mayor of Carterton, and was replaced by John Booth.

[25] He and his fellow NZ First MPs lost their seats after the party's vote dropped to 2.6%, below the five percent threshold needed to enter Parliament.

[26][27] On 9 November 2020, Mark was granted retention of the title "The Honourable" for life, in recognition of his term as a member of the Executive Council.

[32][2] He ran on a campaign for more scrutiny of council operations to avoid previous "cost blowouts", also drawing attention to what he described as "some political parties...pushing for central control over everything, whether by asset stripping first or imposing more and more legislative requirements".

[33] He later clarified his concerns that this was [an]..."ideological drive to centralise and put everything under the control of the government", citing the Three Waters reform programme as an example of this "collectivism".

[39][40] In early July 2024, Mayor Mark urged other local councils to consider amalgamating into larger entities due to the financial costs of the Sixth National Government's "Local Water Done Well" programme, stating "there was no room for "fiefdoms doing their own thing in the future."

Mayor of South Wairarapa Martin Connelly expressed disagreement with Mark, saying that "it is far too early to know what the long-term effects will be.

"[41] In mid January 2025, Mark was appointed to the Waitangi Tribunal by Minister for Māori Development Tama Potaka.