The whole point is to ensure your vote gets counted correctly, yes? If you wanted to vote Democrat and discover your id in the Republican column, you let somebo

The whole point is to ensure your vote gets counted correctly, yes? If you wanted to vote Democrat and discover your id in the Republican column, you let somebody know. Then they re-check the ballot and can say "no, you marked Republican. That was your mistake and we didn't count it wrong." Or they'll say "gee golly, yes, we counted your vote wrong. Our mistake. We'll correct the counts." If your id isn't in either column, you also let somebody know so you can re-vote. This makes sure your vote doesn't get "misplaced", either by malice or incompetence.