Dave Liquorice wrote
Rod Speed wrote

Compulsory voting would require the addition of a "positive
abstention", though - a "None of the above" option

No, that is always available by just not bothering
to tick any box on the ballot paper etc.

No mark on a ballot paper is just asking for some one to mark it.
OK shouldn't happen but ...

Trivially avoidable by ticking them all.

There would have to be a "No Suitable Canditate" option.

Nope, because you can just tick them all.

SWMBO'd and myself where wondering if one could form a new
political party called "The No Suitable Candidate Party" and run
candiates in a few elections.

We have had all of 'Warm Sun Ripened Tomato Party' and 'Party Party Party'
as well.

Trouble is I have a feeling they would
also have to be prepared to take the seat.

No, they are free make an obscene gesture in the
general direction of whoever runs the election.

Unlike nearly all the other small parties that
pop out of the woodwork come election time.