The party's MLAs requested a public inquiry. In February 2006, the party released a code of ethics document for its members. It set guidelines for conduct and outlined how to deal with violators. Actions prohibited in this document include disseminating false information, pressuring prospective contributors and offering bribes to other political parties, candidates or voters. Penalties included having the offender's party membership revoked. In March 2006, the Saskatchewan Party introduced a motion calling on the NDP government to apologize for the highly unfavourable and inaccurate portrayal of Jimmy Gardiner in "". The government has argued it was not responsible for the film's production, and rebuked the motion for an apology. In 2006, in preparation for the Weyburn-Big Muddy by-election, the Saskatchewan Party was accused of using push polling by attempting to link Liberal leader David Karwacki with the Canadian gun registry. The same poll asked respondents if they linked the Saskatchewan Party with the Progressive Conservative Party of Saskatchewan. On May 16, 2006, in an effort to gain political support, Saskatchewan Party MLAs tried to associate the provincial NDP – which had vocally opposed the gun registry – with their federal party counterparts – which support it. In 2006 the party released a taxpayer-funded advertisement for the Saskatchewan Party critical of the then-NDP administration. This ad became known for the misspelling of Saskatchewan – as "Saskatchwan". The ad was also criticized for having false information – for example claiming rising tuition costs, despite the government policy of a 3-year freeze in the price of tuition. On November 23, 2006, the Saskatchewan Party tried to make a political issue about the provincial government trying to reclaim money from tobacco companies for the additional strain smokers placed on the health care system. The NDP government pointed out in response that the Saskatchewan Party had accepted a $10,000 donation from Imperial Tobacco in 2003. In a by-election held on March 5, 2007, the Saskatchewan Party recaptured the seat in the Legislative Assembly left vacant by the death of Ben Heppner. In a first for Saskatchewan politics, Heppner's daughter – Nancy Heppner – won the seat in both the by-election and the 2007 general election. In November 2007, the party was sued by the Progressive Conservative Party of Saskatchewan over a trust fund. The PC party alleges the fund's trustees, which contains $2.9 million, conspired with the Saskatchewan Party to deny the PC party access to their funds, and thus not be able to run candidates in the next election. The Saskatchewan Party denies involvement, even though three of the five trustees are active in the Saskatchewan Party.