You'll go office by office, then review everything before submitting.
Each office is its own screen — vote, then tap Next.
You can go back and change any answer before you submit.
Once you submit your ballot, it cannot be changed.
How voting works
You'll see one office at a time. Some ask you to pick one candidate, some let you
pick more than one, and some ask you to rank candidates in order. Each ballot screen
explains what to do at the top.
After the last office, you'll see a review screen listing every choice you made.
You can change anything there before submitting. Once you submit, it's final.