Idaho's 1st congressional district is one of two congressional districts in the U.S. state of Idaho. It comprises the western portion of the state. From statehood in 1890 to the 1910 election, Idaho was represented by a statewide at-large seat. Following the 1910 census, Idaho gained a second House seat; it was first contested in 1912. However, through the 1916 election, both seats were statewide at-large seats. The first election in Idaho with two congressional districts was in 1918.