Here's a few examples from an old Redd it Thread:
Republican Ralph Shortey, a former Oklahoma state senator, Drumpf's Oklahoma campaign chair to plead guilt to child sex trafficking
Republican Speaker of the House Dennis Hastert was indicted on federal charges of structuring bank withdrawals after prosecutors alleged Hastert had molested at least four boys as young as 14 and attempted to compensate his victims and subsequently conceal the transactions. Hastert eventually admitted that he sexually abused the boys whom he had coached decades earlier, and was sentenced to fifteen months in prison.
https://www.nytimes.com/2017/07/18/us/dennis-hastert-released.html
Republican Tim Nolan, chairman of Donald Drumpf’s presidential campaign in Kentucky, pled guilty to child sex trafficking and on February 11, 2018 he was sentenced to serve 20 years in prison.
Republican state Senator Ralph Shortey was indicted on four counts of human trafficking and child pornography. In November 2017, he pleaded guilty to one count of child sex trafficking in exchange for the dropping of the other charges.
Republican Minnesota State Representative Jim Knoblach Drops Out Of Race After Daughter Says He Molested Her For More Than Ten Years 22 Sep 2018
Republican anti-abortion activist Howard Scott Heldreth is a convicted child rapist in Florida.
https://offender.fdle.state.fl.us/offender/sops/flyer.jsf?personId=28587
Republican County Commissioner David Swartz pleaded guilty to molesting two girls under the age of 11 and was sentenced to 8 years in prison.
Republican judge Mark Pazuhanich pleaded no contest to fondling a 10-year old girl and was sentenced to 10 years probation.
http://www.poconorecord.com/article/20120426/NEWS90/204260334
Republican legislator Edison Misla Aldarondo was sentenced to 10 years in prison for raping his daughter between the ages of 9 and 17.
https://en.wikipedia.org/wiki/Edison_Misla_Aldarondo
Republican Mayor Philip Giordano is serving a 37-year sentence in federal prison for sexually abusing 8- and 10-year old girls.
https://en.wikipedia.org/wiki/Philip_Giordano
Republican campaign consultant Tom Shortridge was sentenced to three years probation for taking nude photographs of a 15-year old girl.
http://archive.easyreadernews.com/archives/news2001/0621/rb%20Shortridge.php
Republican Senator Strom Thurmond, a notable racist, had sex with a 15-year old black girl which produced a child.
https://en.wikipedia.org/wiki/Strom_Thurmond
Republican pastor Mike Hintz, whom George W. Bush commended during the 2004 presidential campaign, surrendered to police after admitting to a sexual affair with a female juvenile.
Republican legislator Peter Dibble pleaded no contest to having an inappropriate relationship with a 13-year-old girl.
https://www.nytimes.com/2004/04/18/nyregion/embroiled-first-selectman-takes-leave.html
Republican Congressman Donald “Buz” Lukens was found guilty of having sex with a female minor and sentenced to one month in jail.
https://www.nytimes.com/1989/05/25/us/teen-ager-in-ohio-testifies-to-sex-with-a-congressman.html
Republican fundraiser Richard A. Delgaudio was found guilty of child porn charges and paying two teenage girls to pose for sexual photos.
Republican activist Mark A. Grethen convicted on six counts of sex crimes involving children.
http://www.thenewblackmagazine.com/view.aspx?index=437
Republican activist Randal David Ankeney pleaded guilty to attempted sexual assault on a child.
Republican Congressman Dan Crane had sex with a female minor working as a congressional page.
https://en.wikipedia.org/wiki/Dan_Crane
Republican activist and Christian Coalition leader Beverly Russell admitted to an incestuous relationship with his step daughter.
https://www.nytimes.com/1995/08/02/opinion/journal-beverly-russell-s-prayers.html
Republican congressman and anti-gay activist Robert Bauman was charged with having sex with a 16-year-old boy he picked up at a gay bar.
https://en.wikipedia.org/wiki/Robert_Bauman
Republican Committee Chairman Jeffrey Patti was arrested for distributing a video clip of a 5-year-old girl being raped.
http://www.njherald.com/article/20060510/ARTICLE/305109971
Republican activist Marty Glickman (a.k.a. “Republican Marty”), was taken into custody by Florida police on four counts of unlawful sexual activity with an underage girl and one count of delivering the drug LSD.
Republican legislative aide Howard L. Brooks was charged with molesting a 12-year old boy and possession of child pornography.
Republican Senate candidate John Hathaway was accused of having sex with his 12-year old baby sitter and withdrew his candidacy after the allegations were reported in the media.
Republican preacher Stephen White, who demanded a return to traditional values, was sentenced to jail after offering $20 to a 14-year-old boy for permission to perform oral sex on him.
http://www.thedp.com/article/2004/01/brother_stephen_convicted_of_soliciting_sex
Republican talk show host Jon Matthews pleaded guilty to exposing his genitals to an 11 year old girl.
Republican anti-gay activist Earl “Butch” Kimmerling was sentenced to 40 years in prison for molesting an 8-year old girl after he attempted to stop a gay couple from adopting her.
Republican Party leader Paul Ingram pleaded guilty to six counts of raping his daughters and served 14 years in federal prison.
Republican election board official Kevin Coan was sentenced to two years probation for soliciting sex over the internet from a 14-year old girl.
https://www.semissourian.com/story/57773.html
Republican politician Andrew Buhr was charged with two counts of first degree sodomy with a 13-year old boy.
Republican politician Keith Westmoreland was arrested on seven felony counts of lewd and lascivious exhibition to girls under the age of 16 (i.e. exposing himself to children).
http://www.chattanoogan.com/2002/6/21/23202/Tennessee-Legislator-Commits-Suicide.aspx
Republican anti-abortion activist John Allen Burt was charged with sexual misconduct involving a 15-year old girl.
https://en.wikipedia.org/wiki/John_Burt_(anti-abortion_activist))
Republican County Councilman Keola Childs pleaded guilty to molesting a male child.
http://the.honoluluadvertiser.com/article/2007/Oct/08/ln/hawaii710080338.html
Republican activist John Butler was charged with criminal sexual assault on a teenage girl.
https://caselaw.findlaw.com/il-court-of-appeals/1113050.html
Republican candidate Richard Gardner admitted to molesting his two daughters.
https://lasvegassun.com/news/2002/oct/14/assembly-candidate-gardner-ruled-ineligible-due-to/
Republican County Commissioner Merrill Robert Barter pleaded guilty to unlawful sexual contact and assault on a teenage boy.
Republican City Councilman Fred C. Smeltzer, Jr. pleaded no contest to raping a 15 year-old girl and served 6-months in prison.
https://www.wgal.com/article/council-accepts-resignation-of-member-imprisoned-for-rape/6189408
Republican activist Parker J. Bena pleaded guilty to possession of child pornography on his home computer and was sentenced to 30 months in federal prison and fined $18,000.
http://www.salem-news.com/articles/october172007/repub_scandals_10_17_07.php
Republican parole board officer and former Colorado state representative, Larry Jack Schwarz, was fired after child pornography was found in his possession.
https://www.dailykos.com/stories/2006/9/30/251895/-
Missouri House member faces expulsion after investigation finds he sexually, physically abused his children https://www.washingtonpost.com/nation/2021/04/20/rick-roeber-abuse-missouri-house/
Kansas House member Mark Samsel was arrested on charges of misdemeanor battery after getting into a physical altercation with a student while substitute teaching. Videos show Samsel focusing most of his attention on one male student. Samsel “put hands on the student” and allegedly kneed him in the crotch.
https://www.kansascity.com/news/politics-government/article251069219.html
And then there's the vast majority of the Wiki list:
https://en.m.wikipedia.org/wiki/List_of_federal_political_sex_scandals_in_the_United_States