Or if you see the ÖVP and their voters as right and half of NEOS as right, it was:
58% right
42% left
As always here.
I seem to recall that in the 70s and 80s the SPO would win or come close to winning absolute majorities
But often with relatively small national leads: these were the days when the SPÖ and ÖVP would routinely take well over 90% of votes between them. Austria was not a normal democratic polity at the time - there was extreme polarisation and extremely high turnouts because of what had happened in the 1930s (the destruction of Red Vienna, the extremely brief civil war and 'Austrofascism' more than what happened
after...). The country would have been ungovernable, but for the
proportz system, which originated as a way of turning swords into ploughshares: even when there were single party governments, there was in practice a high degree of co-operation between the two once quite literal enemies. Long ago and far away now, of course.