[4] After graduating from college, Warner was elected to the Taunton city council.

He served as chairman of the ways and means committee from 1916 to 1918 and speaker of the House from 1919 to 1920.

He was appointed attorney general when Reading resigned in 1928 and remained in office until his retirement in 1935.

He then conducted private practice in Boston until 1940, when Governor Leverett Saltonstall appointed Warner to be a Justice of the Massachusetts Superior Court.

This article about a member of the Massachusetts House of Representatives is a stub.