Number of tiers
Austria
Answer
3
Source
Official webpage of Austrian Ministry of Interior
National Council
Elections take place based on the principles of proportional representation, a closed list system, and preferential votes. [...]
Seats are assigned in the course of a three-stage process:
1. Regional Constituencies
2. Provincial Constituencies
3. Final nationwide assignment process on the basis of the "d’Hondt Rule" of highest average, applied to each party’s surplus votes; 4 % threshold for parties to gain representation.
