So New York kind of has something like this. They can run candidates under multiple parties. For example, they run the DNC candidates under the Democrats, but also under the Working Families Party, and both will count as a vote for them. My family members in New York always vote for the Dem candidate under the WFP because it helps them make quorum and also signals that they prefer the WFP endorsement over the DNC.

Here’s an article with a sample ballot from a district of NY. You can see Kamala and Trump under Dem/Repub, but also under WFP/Cons as candidates. Same with the senate.

The national numbers never show the breakdowns of which bubbles were actually filled in, just the totals. But I’m always curious as to what the ballot breakdown actually is.