Yes, this one.
The "Historical Atlas of Austria" is one of the best things out there to read. It was one of my study books for history/political science in high school, but I don't have it anymore (it technically belonged to the school, because this thing cost about 50€ (70$).
Data for pre-WW1 elections is very rare anyway, you can find overall results - but hardly any in-depth data.
For elections after WW1, there are several brochures by the Ministry of the Interior:
http://www.bmi.gv.at/cms/BMI_wahlen/nationalrat/NRW_History.aspx
