Thomas Baker[a] & Thomas Hughes[b] Democratic John Jackson Selman[c] Democratic In the 1848 Iowa State Senate elections, Iowa voters elected state senators to serve in the second Iowa General Assembly.

Elections were held for 10 of the state senate's 19 seats.

To claim control of the chamber from Democrats, the Whigs needed to net two Senate seats.

Democrats maintained control of the Iowa State Senate following the 1848 general election with the balance of power remaining unchanged with Democrats holding 11 seats and Whigs having eight seats.

[c] Source:[12] District boundaries for the Iowa Senate in 1848: