Here’s a question... If this is the case, why would someone want to appear on two different lines of a ballot? People should be selective and smart enough to know the rules of voting, and if they cannot figure this out ahead of time, they have no business voting. Spoiled ballots should be tossed out.
Because you vote for a candidate, but the ballot is a matrix and if a candidate is good and supported (endorsed) by several parties, he's listed for each of those endorsements. Therefore, I can vote on the Conservative Line and support the candidate and the party. But legitimately, the candidate can be checked off two or more times and it's the same candidate.
For example, the conservative Carl Paladino is endorsed by the Republican Party, the Conservative Party, and the Taxpayer Party...to show my support for the Conservative Party, I would vote on the Conservative Party line.
Yes, I shouldn't vote Republican, too, but the fact is that if I check both, I have not voted for two candidates.