As the day wore on, however, Mr. Giuliani insisted that he was not a "single-issue candidate."
"But if I have to be a single-issue candidate," he added quickly, "there is no more pressing issue."
For his part, Morin described Nadeau as a single-issue candidate focused only on the environment.
Even a single-issue candidate, such as a staunch abortion opponent, might outperform an indigenous Reform hopeful.
As it turns out, Mr. Horrigan, who has never held public office, is one of those single-issue candidates.
These people are running as single-issue candidates.
But Mr. Pappas has said repeatedly that he is not a "single-issue candidate."
In many races, the single-issue candidates are not expected to win more than a protest vote.
But other criticisms remained - that Mr Ribadu was a single-issue candidate, with few clear policies on trade, power, the economy or education.
True, but he also took criticism for being a single-issue candidate.