Ball joined New Zealand First at age 30. He was the NZ First electorate committee vice-chairman in
Palmerston North while studying at
Massey University and launched a campus branch of New Zealand First in September 2013. The next month, he was elected the party's vice-president for the
North Island. He stood in the
Palmerston North electorate in the
2014 election and was elected from the New Zealand First list, where he was ranked 10th. He formed a close friendship with fellow New Zealand First MPs,
Fletcher Tabuteau and
Clayton Mitchell. Ball's members bill, the Youth Employment Training and Education Bill, was debated in Parliament in May 2017; proposing the establishment of a youth employment training and education programme within the
Defence Force, it was defeated at its first reading with only the support of New Zealand First, Labour and the Māori Party. In the
2017 general election, Ball contested Palmerston North again. He came third and was re-elected into Parliament on the New Zealand First party list. He continued as New Zealand First spokesperson for social services and youth affairs and gained responsibility as the spokesperson for social housing, justice, courts and police. He led an attempt to require the
Abortion Legislation Bill to succeed in a referendum to be enacted; it failed 19–100. Ball introduced the Protection for First Responders and Prison Officers Bill in May 2018. The bill proposed that anyone who intentionally injures a first responder or prison officer commits an offence with a minimum sentence of six months of imprisonment. The bill will supported unanimously by members at its first reading but lost support as it progressed through later stages. Following its July 2020 second reading, National and Labour, unhappy with the bill's drafting, returned it to the justice committee for further consideration. After the 2020 general election, and after it was transferred to National Party MP
Mark Mitchell, the bill was reconsidered by the House and discharged. In the
2020 general election held on 17 October, Ball unsuccessfully contested Palmerston North, coming fifth. 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. == Later career ==