No winner/s

I guess it depends upon whether there is a chance that more than one person could win, Ms Tan.

Certainly in the UK lottery, where the punters choose their own numbers when they buy their tickets, it is possible for the jackpot prize to be won by more than one ticket holder. However, if a TV newsreader said "There was no jackpot winner in tonight's lottery draw", that would be understood to imply that there were no joint winners either. (Or vice versa)

By the way, the word "punter" is UK slang -- in formal English it would be better to choose another word such as "participant".

Thanks, JTT.

Thanks, Contrex.

I didn't know that 'punter' was slang. Where I live, the word 'punter' is commonly seen in the newspapers.

It is common that slang words enter the common usage by such a means. "To punt" has a different meaning to Americans, though, so it would remain an other than American usage.

You might see "punter" in a newspaper, but it would be too informal for an essay.

Thanks, Setanta and Contrex.