Van Haga first joined the VVD in 1992. In 2010, he was elected as a municipal councilor in
Haarlem. During the 2017 general election, he was elected as an MP for the VVD in the House of Representatives. During the election, his candidacy was endorsed by
Labour Party politician and former mayor of Haarlem
Bernt Schneiders. In 2017, Van Haga was investigated over an alleged concealment of a number of problems with local regulations during his time as a councilor. In 2019, he was expelled from the VVD parliamentary group after he was convicted for drunk driving and accused of interfering with his business operation as an MP. This caused the third Rutte cabinet to lose their parliamentary majority. Van Haga subsequently sat as an independent before announcing he had become a member of the
Forum for Democracy party. Van Haga already had close ties with the FvD group as an independent. Van Haga left FvD together with two others in response to a poster put out by the party which compared the
COVID-19 lockdowns to the
Nazi occupation of the Netherlands. He has since created his own political party called
Belang van Nederland (BVNL). The new party had three seats in the House of Representatives. Van Haga has described it as 'classical liberal' and 'classical right-wing'. He ran for
re-election in November 2023, but BVNL did not win any seats. He again led his party in the
June 2024 European Parliament election, but the BVNL's vote share of 0.4% was insufficient for a seat. == Personal life ==