invalid.votes: Extracts the invalid.votes member (if any) from the result of a count
Description
This method was added Jan 2022 -- it was named in a warning message but had
apparently either never been implemented, or had been "lost" through
versioning.
Usage
invalid.votes(x)
Value
matrix with one column per candidate and one row per invalid
ballot
Arguments
x
value returned by stv, condorcet, approval, plurality, or score