Robert R. Rigler Republican Clifton C. Lamborn Republican The 1970 Iowa State Senate elections took place as part of the biennial 1970 United States elections.

The Iowa General Assembly provides statewide maps of each district.

In June 1969, a special election in district 18 resulted in Sen. Orr flipping a seat in favor of the Democrats.

[b] Therefore, on election day in November 1970, Republicans controlled 44 seats and Democrats had 17.

To claim control of the chamber from Republicans, the Democrats needed to net 9 Senate seats.