Ketcham became a Republican when that party was first organized in 1854, having been a Whig prior to that time. He was prothonotary for Luzerne County, Pennsylvania from 1855 to 1858. He was a member of the Pennsylvania House of Representatives in 1858.
Ketcham joined the Republican party when it was founded in 1854, having been a Whig before that time. He held the position of prothonotary for Luzerne County, Pennsylvania from 1855 to 1858 and served as a member of the Pennsylvania House of Representatives in 1858.