Michael Sessions is too young to drink champagne legally, but the 18-year-old high school senior has reason to celebrate: He unofficially won a race for mayor Tuesday by defeating the baby boomer incumbent.

Sessions, who turned 18 on Sept. 22, ran as a write-in candidate because he was too young to get on the ballot in the spring. The young politician used $700 from a summer job to fund his door-to-door campaign in Hillsdale, Mich., a town of about 9,000.

Unofficial results show that Sessions got 732 votes, compared with 668 for Mayor Doug Ingles, 51. Once his victory is certified and he's sworn in - the ceremony is set for Nov. 21 - he may be the youngest mayor in the USA. The U.S. Conference of Mayors lacks the data to determine whether he'll be the youngest mayor ever, says spokeswoman Elena Temple.

Sessions plans to devote after-school hours to the job and use his bedroom as his office.