Brown was elected to the Thirty-first Congress (March 4, 1849 – March 3, 1851). He was an unsuccessful candidate for renomination in 1850.
Life after politics
Brown became chief editor of the Indianapolis Sentinel in 1850, working there until 1855. He served many times as chairman of the Democratic State central committee of Indiana. He was appointed by President Pierce as special agent of the Post Office Department for Indiana and Illinois, a position he held from 1853 until his death near Indianapolis, Indiana on March 18, 1857. He was interred in Crown Hill Cemetery.