In May 2002, van der Ham was elected Member of Parliament. He was re-elected in 2003, 2006 and 2010 with preferential votes. Together with members of GroenLinks and the Labour Party he drafted the bill that led to the 2005 European Constitution referendum, the country's first referendum in two hundred years. He drafted several other successful bills, among others: the possibility to correct parliamentary bills by people-initiated referenda, an amendment to put equal rights for gays and handicapped in the Constitution, a bill to abolish the ban on blasphemy, a bill to reform a ban on shopping on Sundays and a proposal to make the formation process of a new government more transparent. In November 2006, he also became deputy parliamentary leader of his party. He focused on matters of education, drug policy, culture, mass media, economic affairs, environment and energy, social equality, democracy, and freedom of speech. In 2007 he wrote a book Voortrekkers en Baanbrekers about the role of the Netherlands in the European Union after the European Constitution referendum. In 2012 he published a book "The Morality of Freedom" about the history and dilemmas of permissive societies. In 2012 he decided not to run for a new term in Parliament, and said he wanted a political 'time-out'. He was MP until 19 September 2012.
Out of parliament
In his political afterlife he maintained a public figure. In 2014 he wrote the book De Koning Kun Je Niet Spelen on both his acting and political work. Currently Mr. Van der Ham has several board positions in the field of media, culture, healthcare, education and in the private sector. In 2018 he formed, with other members of his political party D66, the movement Opfrissing, to correct some conservative-leaning policies that were introduced by the party. He joined the Human Rights Committee of Liberal International, and is in the board of Humanists International.
Chairman of the Dutch Humanists
In November 2012 Van der Ham was elected chair of the Dutch Humanist Association. In this position he is focusing on issues of freedom of speech, education and solidarity with atheists and humanists in Muslim-majority countries. Since January 2010, he has maintained a weekly vlog on YouTube about freethinking, humanism and liberalism. On 9/11 2009 he produced his first English spoken "Freethoughtvlog" about the Ground 0 Mosque. He is also publishing English written blogs on his website. In 2015 he featured in the documentary Among Nonbelievers about the hardships of ex-Muslims, and spoke at the Human Rights Council in Geneva on the topic of blasphemy laws. In 2016, he featured in the follow-up documentary about the dismal situation of irreligious asylum seekers in Dutch refugee camps. In 2018 he published the book 'Nieuwe Vrijdenkers'.
Acting career
In 2016/2017, Van der Ham featured in the musical Ciske de Rat He did the voice-over of the Dutch version of ''. In 2018 he returned to the stage in the Dutch adaption of Kwame Kwei-Armah's play 'Beneatha's Place'.
Personal life
Van der Ham was raised non-religious, though his parents were raised orthodox Protestant. Van der Ham is sympathetic to the Remonstranten, but calls himself an agnostic humanist. He is openly gay and father of a son and daughter.
