The first poll was made for a new name for her town under the premise that she has absolutely changing it. That poll was understood as: "It's changing so pick the best name". This poll is bringing back the old name and having a competition to make sure that the new name picked was better than the old name. If the new name is deemed better than the old name then there will be no doubt as to whether to change the name, thus making it suitable. Yes, having the two polls makes sense indeed, but Linda could have made it one poll by adding 'Kochirakoso' as an option in the voting process.