Kaminski's first political office was as a member of the council of the city of
Rîbnița from 1990 until 2000, when he was
elected to parliament. In 2005, he was re-elected in an
election that proved to be a victory for his party. Kaminski was subsequently elected as vice-speaker, with
Yevgeny Shevchuk, also of the Obnovlenie party, becoming speaker. On 22 July 2009, Shevchuk resigned as speaker and Kaminski was elected unopposed to replace him. The newly elected vice-speaker was
Mikhail Burla, chairman of Obnovlenie.
President of South Ossetia Eduard Kokoity awarded Kaminski the "Order of Friendship" on 12 March 2010, "for a great personal contribution to the development of friendship between the peoples of South Ossetia and Transnistria, merits in strengthening inter-parliamentary cooperation and for his 60-year birthday". In December 2011, Kaminski ran for president of Transnistria as the candidate of Obnovlenie. In the first round of elections, he received 26.48% of the vote, narrowly making it into the second round of voting.
Yevgeny Shevchuk, the former chairman of the Supreme Soviet, received the most support with 38.53%, while sitting president,
Igor Smirnov, came in third with 24.82%. In the election,
United Russia, the ruling political party of
Russia, supported Kaminski's campaign. ==Personal life==