Claim: Ivan Šusteršič (29 May 1863 – 7 October 1925) served as president of the Slovene Parliamentary Club from 1897, and between 1909 and 1911, he was president of the largest opposition coalition, the Slovene Union, and between 1912 and 1914, he was president of the Croat and Slovene Parliamentary Club.
Evidence: In the Parliament, he served as president of the Slovene Parliamentary Club from 1907.