Since October 29, 2013 Matthias Strolz has been a member of a house of the Austrian Parliament frequently referred to as what?
Matthias Strolz: Matthias Strolz (born June 10, 1973) is an Austrian politician. Matthias Strolz:  He is the founder and leader of the political party NEOS – The New Austria and Liberal Forum and has been a member of Austria's National Council since October 29, 2013. National Council (Austria): The National Council ("Nationalrat") is one of the two houses of the Austrian Parliament and is frequently referred to as the lower house.
the lower house