Klawiter served as mayor of his home town of Rumia from 1992 to 2002. In 2006 he became a councilor of the Pomeranian Seym from the PiS list, and in 2010 a councilor of the Wejherowo poviat. On 15 December 2012 he was elected the chairman of the board of the Right of the Republic of Poland in the Pomeranian Voivodeship. In 2014 he ran as a candidate from the PiS list for the European Parliament, and later for the regional council. In 2015 he was elected to the Sejm.
