In 1870, the Iowa General Assembly chose Wright (over William Boyd Allison and others) to serve a six-year term in the United States Senate. He served in the Senate from March 4, 1871, to March 4, 1877.
In 1870, the Iowa General Assembly elected Wright (excluding William Boyd Allison and others) to a six-year term in the United States Senate. His service began on March 4, 1871, and ended on March 4, 1877.