No Austrian state would come anywhere close to voting
YES on secession.
The closest #IndyRef result would probably be in Vorarlberg.
If Vorarlberg got the option of joining Switzerland though, it might actually pass 50% ...
Also, don't know really what would happen if Südtirol were to vote either for Independence from Italy or for joining Austria or for a merger with the rest of Tyrol (a joint referendum would be held in the North to create a future "independent country of Tyrol").
It would also be interesting if Austria held an "EU-exit referendum" like the UK proposes for 2017. Recent polls indicate that Austrians would be 50-50 in such a referendum.