1994

Schweikert ran in the September Republican primary in Arizona's 6th congressional district. It resembled the 5th district formed after the 2000 census, but also included most of the northeastern part of the state, including Flagstaff and the Navajo reservation. J.D. Hayworth defeated him, 45%–22%.^[13][14] After that defeat, Schweikert took time to reconsider and left for a lengthy vacation, which included travel to Calcutta, the Philippines, Myanmar, and Serbia, among other places.^[15]

2008

Schweikert won a six-way Republican primary election on September 2 with 30% of the vote, compared to 27% for his nearest rival, Susan Bitter Smith.^[16]

Several organizations endorsed Schweikert in the election, including the primary: Club for Growth, the Arizona Police Association, Arizona Right to Life, and the Arizona Medical Association.^[17] He received more than $500,000 from the Club for Growth.^[18][19]

Schweikert lost to freshman incumbent Democrat Harry Mitchell, 53%–44%.^[20] He later blamed his defeat on the very bitter primary fight that preceded it.^[21]

2010

Schweikert sought a rematch with Mitchell in 2010, with Libertarian Nick Coons also running. Schweikert won the Republican primary on August 24 with 37% of the vote. The Club for Growth again endorsed Schweikert after having sat out the competitive primary.^[22]

On November 2, Schweikert defeated Mitchell, 52%–43%.

2012

After redistricting, the bulk of Schweikert's former territory became the 9th district, while his home in Fountain Hills was drawn into the newly created 4th district.^[23] But as soon as the maps were released, Schweikert announced he would run in the 6th district. That district had previously been the 3rd, represented by fellow Republican freshman Ben Quayle. In a statement announcing his reelection plans, Schweikert pointed out that he had grown up in Scottsdale—most of which had been drawn into the 6th as well—had represented it in both the state house and in Congress, and owned a second home there.^[24] A revised map, however, placed Schweikert's Fountain Hills home in the reconfigured 6th.^[25][26]

Quayle, whose home in Phoenix had been drawn into the 9th but was just outside the boundaries of the 6th, opted to seek reelection in the 6th as well. During the bitter primary, Schweikert was widely criticized for a mailer that accused Quayle of "going both ways", suggesting that he was bisexual. On the reverse, the mailer listed issues on which it claimed Quayle had taken both liberal and conservative positions. Senator Jon Kyl, who had represented the district from 1987 to 1995, said that "such campaign tactics insult the voters, degrade politics and expose those who stoop to them as unworthy of high office", and Senator John McCain said the mailer was one of the "worst that I have seen" and that it "crosses the boundary of decent political dialogue and discourse." Quayle's spokeswoman called the mailer "utterly false" and "a sleazy smear tactic." Schweikert's spokesman responded that people "should get their minds out of the gutter" because the mailer was "obviously" referring to "'both ways'—as in liberal and conservative." The Arizona Republic asked two political scientists to review the mailer; both said that they had "never seen anybody accuse someone of flip-flopping [on political issues] that way" and said that it was "difficult to believe" that the sexual suggestion was unintentional.^{[27][28][29][30]}

Although the 6th contained almost two-thirds of Quayle's constituents, Schweikert defeated Quayle in the primary–the real contest in what was then a heavily Republican district–53% to 47%.^[31] He was reelected with 62% of the vote.^[32]

2014

Schweikert was easily reelected in 2014, winning over 60% of the vote.

2016

Schweikert was easily reelected in 2016, winning over 60% of the vote.

2018

In 2018, Democratic tech executive Anita Malik held him to only 55% of the vote despite spending very little money.^[33] Malik won 44%,^[34] the first time a Democrat had crossed the 40% mark in what is now the 6th since 1976, when Eldon Rudd won election by only 707 votes in what was then the 4th District^[35] (the district was numbered as the 3rd from 2003 to 2013, and has been the 6th since 2013).

2020

In 2020, Schweikert was challenged by Democrat Hiral Tipirneni, who had run in the neighboring 8th district two years earlier. The Cook Political Report rated the race a tossup, partly due to the district's changing demographics. According to Cook Political Report, the 6th has the most college graduates in Arizona;^[33] in recent years, college graduates had trended away from the GOP.^[36] Schweikert defeated Tipirneni with 52% of the vote.^[37]

2022

In 2022, Schweikert ran for reelection in the newly redrawn 1st district.^[38] He defeated Democratic nominee Jevin Hodge in the general election by 3,195 votes.^[39]

116th Congress (2019-2021)

Schweikert joined Representatives Andy Biggs and Paul Gosar in voting against the Consolidated Appropriations Act, 2021. He called it "one of the more difficult votes I've ever had to make." While the bill included some components he helped write, he voted against it due to the limited time to read the bill in its entirety.^[40]

In 2018, the United States House Committee on Ethics launched an investigation into Schweikert and his chief of staff, Oliver Schwab, over misuse of funds.^[41] On July 30, 2020, Schweikert admitted to 11 violation counts and agreed to an official reprimand by the House and a $50,000 fine.^[42][43] The committee found undisclosed loans and campaign contributions; misuse of campaign contributions for personal use; improper spending by his office; and pressuring staffers to do political work. The House Ethics Committee also faulted him for evasive, misleading, and stalling tactics that helped him skirt more serious violations.^[44] The report laid out a "surprisingly sizable amount of misconduct over a seven year period." Schweikert said these were inadvertent errors, but the committee reported that "the weight of the evidence" did not support his contention.^[45]

117th Congress (2021-2023)

On January 6, 2021, Schweikert was at the U.S. Capitol to certify the 2020 presidential electoral college votes when the Capitol was entered.^[46] Schweikert did not object to counting Arizona's votes but did object to counting Pennsylvania's. In the wake of the entry into the Capitol, Schweikert voted against the second impeachment of Trump.^[47] In March 2021, he voted against the American Rescue Plan Act of 2021.^[48]

As of April 2023, Schweikert had voted in line with Joe Biden's stated position 12.3% of the time.^[49]