State legislator and mayor
In 1906 the local Republican committee nominated Coolidge for election to the state
House of Representatives. He won a close victory over the incumbent
Democrat, and reported to
Boston for the 1907 session of the
Massachusetts General Court. In his freshman term, Coolidge served on minor committees and, although he usually voted with the party, was known as a
Progressive Republican, voting in favor of such measures as
women's suffrage and the
direct election of Senators. Throughout his time in Boston, Coolidge found himself allied primarily with the western
Winthrop Murray Crane faction of the state Republican Party, as against the
Henry Cabot Lodge-dominated eastern faction. In 1907, he was elected to a second term. In the 1908 session, Coolidge was more outspoken, but was still not one of the leaders in the legislature.
Instead of vying for another term in the state house, Coolidge returned home to his growing family and ran for
mayor of Northampton when the incumbent Democrat retired. He was well-liked in the town, and defeated his challenger by a vote of 1,597 to 1,409. During his first term (1910 to 1911), he increased teachers' salaries and retired some of the city's debt while still managing to effect a slight tax decrease. He was renominated in 1911, and defeated the same opponent by a slightly larger margin.
In 1911 the
State Senator for the Hampshire County area retired and encouraged Coolidge to run for his seat for the 1912 session. He defeated his Democratic opponent by a large margin. At the start of that term, Coolidge was selected to be chairman of a committee to arbitrate the "
Bread and Roses" strike by the workers of the
American Woolen Company in
Lawrence, Massachusetts. After two tense months, the company agreed to the workers' demands in a settlement the committee proposed. The other major issue for Republicans that year was the
party split between the progressive wing, which favored
Theodore Roosevelt, and the conservative wing, which favored
William Howard Taft. Although he favored some progressive measures, Coolidge refused to bolt the party. When the new
Progressive Party declined to run a candidate in his state senate district, Coolidge won reelection against his Democratic opponent by an increased margin.
The 1913 session was less eventful, and Coolidge's time was mostly spent on the railroad committee, of which he was the chairman. Coolidge intended to retire after the 1913 session, as two terms were the norm, but when the
President of the State Senate, Levi H. Greenwood, considered running for Lieutenant Governor, Coolidge decided to run again for the Senate in the hopes of being elected as its presiding officer. Although Greenwood later decided to run for reelection to the Senate, he was defeated and Coolidge was elected, with Crane's help, as the President of a closely divided Senate. After his election in January 1914, Coolidge delivered a speech entitled
Have Faith in Massachusetts, which was later republished as a book. His speech, later much-quoted, summarized Coolidge's philosophy of government.
Coolidge's speech was well-received and he attracted some admirers on its account. Towards the end of the term, many of them were proposing his name for nomination to lieutenant governor. After winning reelection to the Senate by an increased margin in the 1914 elections, Coolidge was reelected unanimously to be President of the Senate. As the 1915 session drew to a close, Coolidge's supporters, led by fellow Amherst alumnus
Frank Stearns, encouraged him once again to run for lieutenant governor. This time, he accepted their advice.