Claim: 1903 Boston mayoral election occurred on Tuesday, December 15 and the Democratic candidate(who was a former member of the United States House of Representatives)  won, so the inaugural exercises were held January 4.
Evidence: The Boston mayoral election of 1903 occurred on Tuesday, December 15, 1903. Democratic candidate and incumbent Mayor of Boston Patrick Collins defeated Republican candidate George N. Swallow, and two other contenders, to win a second term. Inaugural exercises were held on Monday, January 4, 1904. Member of the U.S. House of Representatives
from Massachusetts's 4th district