When most leading members of the FPÖ left the party to found the new Alliance for the Future of Austria (BZÖ) in April 2005, he suddenly found himself in the position of the interim national party leader (as the most senior member of the party's steering committee). In that function, he formally expelled former party leader Jörg Haider from the FPÖ.
- Connolly, Kate (29 January 2001). "Remember Jorg Haider?". The Guardian. Retrieved 2009-04-11.
- "Mag. Hilmar Kabas" (in German). Austrian parliament. Retrieved 2009-04-11.
- Kadar, George. "The Sudden & Convenient Death of Joerg Haider". AmericanFreePress.net. Retrieved 2009-04-11.
|FPÖ Party Chairman (interim)
April 5 – April 23, 2005
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