Gregory Diacogiannis

Gregg Diacogiannis: Republican Challenger for Idaho House District 9B

Gregg Diacogiannis is a Republican challenger running for the Idaho House of Representatives in District 9B. Diacogiannis lives in Fruitland, in Payette County, and is seeking to unseat incumbent Representative Judy Boyle in the May 19, 2026 Republican primary. This is his second consecutive campaign for the seat; he previously ran as a write-in candidate in the 2024 general election, where Ballotpedia records show Boyle defeated him and the Democratic candidate. Democrat Lupita Connor is running in the general election.

Background

Diacogiannis was born in Tacoma, Washington, and, according to his campaign website, joined the U.S. Army as an infantryman in 2004 after high school, serving two tours in Iraq with the 2-69th Armor out of Fort Benning, Georgia. Following his military service, he held a range of jobs including retail management and high-threat security work in Afghanistan, and is currently employed as a regional truck driver for Woodgrain, as described on his campaign website. Diacogiannis relocated to Idaho in 2019, settling in Payette County because his wife Kayla grew up in Fruitland, per his campaign biography. He and Kayla homeschool their children, a fact he references in his education policy positions.

Political Career

Diacogiannis has not held elected office. He ran against incumbent Judy Boyle in the 2024 general election for Idaho House District 9B as a write-in candidate, where Ballotpedia records show Boyle defeated him along with Democratic candidate Jody Keeler. He filed again for 2026, setting up a direct Republican primary challenge against Boyle for the May 19 ballot.

Policy Positions

Diacogiannis has outlined his positions on several policy areas through his campaign website and a candidacy announcement published by the Gem State Chronicle in February 2026.

On firearms, he supports a full repeal of the National Firearms Act and all laws he characterizes as infringing on the right to bear arms, as stated on his campaign website. He states that Idaho should lead in returning to what he describes as the original intent of the Second Amendment.

On abortion, Diacogiannis describes himself as an “abortion abolitionist” and supports making all abortions illegal, including in cases of rape and incest. His campaign website states: “All of us are created in the image of God, and we should protect all life,” and commits to voting for all bills that limit abortion with the stated goal of criminalizing all abortions in Idaho.

On taxes, he supports eliminating both the property tax and the income tax in Idaho, replacing them with a flat sales tax that would exclude groceries and could not be increased over time, per his campaign website. His Gem State Chronicle candidacy announcement also listed repealing taxes on groceries and gas as part of a broader tax overhaul.

On education, Diacogiannis supports school choice and a funding model that would allow dollars to follow each child to any school of the parents’ choosing. He describes education as the sole responsibility of parents, as outlined on his campaign website.

On immigration, his Gem State Chronicle candidacy announcement states that government should protect Idaho’s workers and that all people in the country without legal status must be removed.

Political Alignment

The available evidence supports classifying Gregg Diacogiannis as a Far-Right Extremist within Idaho’s political context, based on the combination of his documented rhetoric, his explicitly theological policy framing, and his financial ties to legislators at the outermost edge of the Idaho Republican caucus.

His campaign messaging explicitly and repeatedly frames the sitting incumbent and the broader Republican legislative class as insufficiently conservative. His Gem State Chronicle candidacy announcement quotes him telling supporters: “The people we keep sending to Boise have gotten too comfortable with compromise. Compromise will be the death of Idaho and our way of life,” and calls for “bold, unapologetic, Idaho First leadership.” This is not an isolated statement but a consistent theme running through his public campaign materials.

His abortion position carries explicit Christian nationalist undertones. His campaign website frames opposition to all abortion, including in cases of rape and incest, in theological terms, stating that “all of us are created in the image of God” and that “no child should pay for the sins of their father.” This language frames a civil policy question in terms of biblical authority, consistent with Christian nationalist rhetoric as a governing framework rather than a statement of personal faith alone.

His campaign has received a financial contribution from Idaho State Senator Glenneda Zuiderveld, as documented in his campaign finance report filed with the Idaho Secretary of State. Zuiderveld is a confirmed member of the Idaho Gang of Eight, as listed in the Observer News Group’s published membership roster and acknowledged in Zuiderveld’s own Substack, where she writes directly as a Gang of Eight member. She is also a member of the Idaho Freedom Caucus and was elected with the support of the Citizens Alliance of Idaho, according to her Wikipedia profile. A financial contribution from a sitting Gang of Eight legislator is a documented alignment signal placing Diacogiannis within the network of legislators who occupy the far-right edge of Idaho Republican politics.

Taken together, the pattern of establishment-targeting rhetoric, the theologically framed policy positions, and the financial connection to a Gang of Eight member place Diacogiannis at the far-right end of Idaho’s Republican spectrum.

Campaign and Endorsements

Diacogiannis is campaigning under the slogan “Lead like an Infantryman, Serve like a Patriot,” drawing on his military background as a central part of his public identity, as described on his campaign website. His campaign committee is the Gregg Diacogiannis Victory Fund, with Kayla Diacogiannis listed as treasurer. Beyond the contribution from Senator Zuiderveld documented in his Idaho Secretary of State campaign finance report, no additional formal endorsements have been publicly reported as of April 2026. His campaign raises funds through Anedot and maintains a presence on Facebook and X. The general election is November 3, 2026.

FAQ

Who is Gregg Diacogiannis? Gregg Diacogiannis is a Republican candidate for the Idaho House of Representatives in District 9B. He is a U.S. Army veteran and truck driver who lives in Fruitland, Idaho, in Payette County.

What district is Gregg Diacogiannis running in? Diacogiannis is running in Idaho House District 9B, which covers Payette County.

Is Gregg Diacogiannis an incumbent? No. Diacogiannis has not previously held elected office. He is challenging long-serving incumbent Representative Judy Boyle in the May 2026 Republican primary.

What are Gregg Diacogiannis’s political positions? Diacogiannis supports repealing the National Firearms Act, abolishing abortion without exceptions, replacing Idaho’s income and property taxes with a flat sales tax, and expanding school choice. He frames several of these positions in explicitly religious terms and describes his campaign as an alternative to what he calls compromise within the Idaho Republican Party.

Has Gregg Diacogiannis run for office before? Yes. He ran against Representative Boyle in the November 2024 general election as a write-in candidate and was defeated. He filed to run again in the 2026 cycle, this time in the Republican primary.

Profile published by IdahoVoters.com. Last updated April 2026. This profile will be updated as additional information becomes available.