We're still well above 60% for GEs, though at pretty much a historical low point, with only the 1918 election scoring lower & that with many voters being overseas.
Problems will start when, not if it falls below 50%, IMO a distinct possibility should we have a GE this year.
Do you think we'd have a low turn out? You might be right...
I can see the "despair and exasperation" argument for that, but in the other hand, I bet the Party Machines would glow red hot to get the vote out with so much at stake.
Dunno. Wouldn't put a tenner on either to be honest.