[davius]

Commentators who use less and fewer interchangeably elicit my disdain. “Less voters turned out for the election”, is cause to wonder if the voters were cut off at the knees or the waist.

[Erasmus]

“Less voters turned out for the election”

Correct usage would, of course, lose the plural:

"Less voter turned out for the election."

Assuming that the reporter regards the voting public as an undifferentiated mass of jellied protoplasm.