1903 Boston mayoral election

The Boston mayoral election of 1903 occurred on Tuesday, December 15, 1903. Democratic incumbent Patrick Collins defeated Republican nomknee George N. Swallow and two other contenders to win a second term.

Under legislation adopted in June 1903, this was the first Boston municipal election with "caucuses, henceforth to be called primaries", which were held on Thursday, November 19, 1903.

Inaugural exercises were held on Monday, January 4, 1904.

Democratic primary

 * Patrick Collins, Mayor of Boston since 1902, former member of the United States House of Representatives (1883–1889), Massachusetts Senate (1870–1871), and Massachusetts House of Representatives (1868–1869)
 * Frederick S. Gore, member of the Massachusetts Senate

Republican primary
Source:
 * E. Peabody Gerry, physician, age 56, former Boston Alderman (1900)
 * Michael J. Murray, lawyer, age 36
 * George N. Swallow, grocer, age 49, former chairman of the Boston Republican Committee (1899), Governor's councilor (1888–1889), state senator (1894), and state representative (1889–1891)

Other candidates

 * William H. Carroll, Socialist Labor
 * George W. Galvin, physician and head of the Wage Earners Emergency and General Hospital, Socialist
 * Galvin received all 423 votes cast in his party's primary election for mayor.