[1] After attending schools in Warnerville, Charlotteville, and Fredonia,[1] and a seminary, he began teaching.
Gallup subsequently moved west, settling in Marshalltown, Iowa in May 1861, where he continued his practice of law for some time.
[2] Gallup began his journalism career by acquiring the Marshalltown Times in October 1861.
[2] Gallup ran in the 1875 Iowa Senate election as a Republican and won the District 45 seat.
Three years later, he founded the Monthly Review and Advertiser, serving as its publisher from February 1899 to March 1900.