He ran for Delegate to the Thirty-sixth United States Congress and won by 300 votes, but his opponent Samuel G. Daily contested the election and won. The House Committee on Elections found many cases of fraud and voter irregularities ranging from improperly commissioned election officials to the vote total from Izard county exceeding the county's population. Estabrook served from March 4, 1859, to May 18, 1860, when he was removed and replaced by Samuel G. Daily.[4] Experience Estabrook was appointed by the Governor to codify the Nebraska State laws in 1866.[citation needed]
He then became the prosecuting attorney for Douglas County, Nebraska in 1867 and 1868. He was a member of the Nebraska State Constitutional Convention in 1871.[citation needed]
Experience Estabrook died in Omaha, Nebraska, and was buried in Forest Lawn Cemetery in Omaha.[5]
His daughter, Caroline, was a composer. His son, Henry Dodge Estabrook, was a lawyer in New York City.