Ballot rotation works as follows:

• Each house district gets its own ballot.
• Candidates for state representative are listed in a random alphabetical order determined by the division.
• Candidates for state senate are listed in the same random alphabetical order in odd house districts, and they rotate in even house districts, so that the candidate at the top of the list drops to the bottom of the list.
• All other candidates begin in alphabetical order in House District 1 and rotate from there.

So for the special primary election, candidates for the vacant U.S. House seat are listed alphabetically in House District 1. Then the candidate at the top of the list drops to the bottom of the list in House District 2. This process repeats through House District 40.