| Election Name: | 2018 United States House of Representatives elections in Idaho |
| Country: | Idaho |
| Type: | legislative |
| Ongoing: | no |
| Previous Election: | 2016 United States House of Representatives elections in Idaho |
| Previous Year: | 2016 |
| Next Election: | 2020 United States House of Representatives elections in Idaho |
| Next Year: | 2020 |
| Seats For Election: | All 2 Idaho seats to the United States House of Representatives |
| Party1: | Republican Party (United States) |
| Last Election1: | 2 |
| Seats1: | 2 |
| Popular Vote1: | 367,441 |
| Percentage1: | 61.73% |
| Swing1: | 3.93% |
| Party2: | Democratic Party (United States) |
| Last Election2: | 0 |
| Seats2: | 0 |
| Popular Vote2: | 207,313 |
| Percentage2: | 34.83% |
| Swing2: | 4.17% |
The 2018 United States House of Representatives elections in Idaho were held on Tuesday, November 6, 2018, to elect the two U.S. representatives from the U.S. state of Idaho; one from each of the state's two congressional districts. Primaries were held on May 15, 2018. The elections and primaries coincided with the elections and primaries of other federal and state offices.
Results of the 2018 United States House of Representatives elections in Idaho by district:[1]
| scope=col rowspan=3 | District | scope=col colspan=2 | Republican | scope=col colspan=2 | Democratic | scope=col colspan=2 | Others | scope=col colspan=2 | Total | scope=col rowspan=3 | Result | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| scope=col colspan=2 style="background:" | ! | scope=col colspan=2 style="background:" | ! | scope=col colspan=2 | ! | scope=col colspan=2 | |||||||||
| scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % ! | scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % ! | scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % ! | scope=col data-sort-type="number" | Votes ! | scope=col data-sort-type="number" | % |
| 197,719 | 62.75% | 96,922 | 30.76% | 20,428 | 6.48% | 315,069 | 100.0% | Republican hold | |||||||
| 170,274 | 60.67% | 110,381 | 39.33% | 0 | 0.00% | 280,655 | 100.0% | Republican hold | |||||||
| Total | 367,993 | 61.77% | 207,303 | 34.80% | 20,428 | 3.43% | 595,724 | 100.0% |
| Election Name: | 2018 Idaho's 1st congressional district election |
| Country: | Idaho |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2016 United States House of Representatives elections in Idaho#District 1 |
| Previous Year: | 2016 |
| Next Election: | 2020 United States House of Representatives elections in Idaho#District 1 |
| Next Year: | 2020 |
| Nominee1: | Russ Fulcher |
| Party1: | Republican Party (US) |
| Popular Vote1: | 197,167 |
| Percentage1: | 62.7% |
| Nominee2: | Cristina McNeil |
| Party2: | Democratic Party (US) |
| Popular Vote2: | 96,932 |
| Percentage2: | 30.8% |
| Map Size: | 117 |
| U.S. Representatives | |
| Before Election: | Raúl Labrador |
| Before Party: | Republican Party (US) |
| After Election: | Russ Fulcher |
| After Party: | Republican Party (US) |
See also: Idaho's 1st congressional district. The incumbent was Republican Raúl Labrador, who had represented the district since 2011 and was reelected with 68% of the vote in 2016. He retired to unsuccessfully run in the 2018 Republican gubernatorial primary.
| Election Name: | 2018 Idaho's 2nd congressional district election |
| Country: | Idaho |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 2016 United States House of Representatives elections in Idaho#District 2 |
| Previous Year: | 2016 |
| Next Election: | 2020 United States House of Representatives elections in Idaho#District 2 |
| Next Year: | 2020 |
| Nominee1: | Mike Simpson |
| Party1: | Republican Party (US) |
| Popular Vote1: | 170,274 |
| Percentage1: | 60.7% |
| Nominee2: | Aaron Swisher |
| Party2: | Democratic Party (US) |
| Popular Vote2: | 110,381 |
| Percentage2: | 39.3% |
| U.S. Representatives | |
| Before Election: | Mike Simpson |
| Before Party: | Republican Party (US) |
| After Election: | Mike Simpson |
| After Party: | Republican Party (US) |
| Map Size: | 300 |
See also: Idaho's 2nd congressional district. The incumbent is Republican Mike Simpson, who has represented the district since 1999. He was reelected with 63% of the vote in 2016.
Official campaign websites for first district candidates
Official campaign websites for second district candidates