At least one Republican is very concerned about Mitt Romney's Mormon faith.

Steven Showers, 59, has erected a 14-foot-high, neon sign saying that Romney is a racist who will doom the GOP. The flashing monument on Showers' Southern California front lawn pleads with passerbys to "Save the GOP" from "Romney's racist heart."

Showers, who lives in Newbury Park, said that after Romney became the presumptive Republican presidential nominee, he researched Mormonism and was shocked by what he found. "I was stunned to find out that the Mormon religion is a white supremacist, anti-black, racist ideology," he said to the Ventura County Star.

According to Showers’ website, RomneysRacistHeart.com, the following belief is “embedded” in Mormon doctrine: “White skin indicates a pure character before God. Anything less than white skin indicates a corruption of character before God. Black skin, according to Mormon Doctrine, is an indicator of the worst corruption of character before God.”

Showers, who is white and describes himself as Republican and Christian, spent $2,000 having the giant sign custom-made and hoisted with a crane onto a plywood structure on his lawn, the Los Angeles Times reports.

The Mormon Church's approach to race in the past has been flawed. The Church of Jesus Christ of Latter-day Saints did not allow African Americans to become priests until 1978. Romney claimed that at the time, when he was 31, he pulled over his car upon hearing of the doctrine change and wept tears of joy, the International Business Times reports.

Still, nearly one in five Americans say they would not vote for a Mormon president, according to a recent Gallup poll. It is unclear how much this will even affect Romney since just 57 percent of Americans know that he is Mormon. However, if Romney's faith becomes better known leading up to the election, it could hurt him, according to Gallup.

Philip Barlow, a Mormon historian at Utah State University who worked alongside Romney when Romney was Mormon bishop in Belmont, Mass., said that trying to understand the former Massachusetts governor without Mormonism would be like "watching a football game with half the players invisible."

Although he hasn't spoken about his faith much as a presidential candidate, Romney is from a prominent Mormon family, has donated millions to the church and its charities and has volunteered countless hours to the Mormon community.

Showers' flashy sign has outraged neighbors, who say it is an eyesore and too political. "I think it's very disgraceful," one neighbor told KTLA. "I think it's very insulting to the Romney group."

Others complained that the sign has brought dangerous traffic because visitors come to see it and are distracted as they drive. One such visitor was in support of the sign. "I just thought he was making a really great statement, and I wanted to see it for myself," she told CBS.

Ventury County left a notice Friday ordering Showers to unplug the display, saying it violates code by shining inside neighbors' windows. Showers, however, said the notice gave him 30 days to resolve the problem and that he is determined to keep the sign up. He is also selling $800 miniature versions of his sign on his website.

Check out the most and least Mormon states in the U.S.:

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  • Utah

    69,124 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/7/7f/Salt_Lake_LDS_Temple.jpg" target="_hplink">here</a>.

  • Idaho

    26,108 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/b/bc/Idaho_Falls_Temple.jpg" target="_hplink">here</a>.

  • Wyoming

    11,143 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons.

  • Nevada

    6,486 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/4/4b/Las_Vegas_Temple_1.jpg" target="_hplink">here</a>.

  • Arizona

    6,147 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/4/43/Mesa_Temple.jpg" target="_hplink">here</a>.

  • Hawaii

    5,137 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/9/98/LDS_Laie_Hawaii_Temple_front_view.jpg" target="_hplink">here</a>.

  • Montana

    4,698 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/7/7f/MTempleafar.jpg" target="_hplink">here</a>.

  • Alaska

    4,530 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/b/b9/Anchorage_Alaska_Temple_by_artchase.jpg" target="_hplink">here</a>.

  • Washington

    3,975 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/d/dc/Columbia_river_temple.jpg" target="_hplink">here</a>.

  • Oregon

    3,862 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Portland_Oregon_Temple.jpg" target="_hplink">here</a>.

  • New Mexico

    3,285 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Albuquerque_New_Mexico_Temple_by_a4gpa.jpeg" target="_hplink">here</a>.

  • Colorado

    2,833 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Denver_LDSTemple.JPG" target="_hplink">here</a>.

  • California

    2,050 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Fresno_Temple_rear.JPG" target="_hplink">here</a>.

  • Nebraska

    1,281 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Winter_Quarters_Temple.JPG" target="_hplink">here</a>.

  • South Dakota

    1,205 Mormons per 100,000 persons.

  • Kansas

    1,198 Mormons per 100,000 persons.

  • Texas

    1,178 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Dallas_LDS_Temple_by_David_B.jpeg" target="_hplink">here</a>.

  • Oklahoma

    1,147 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Oklahoma_city_lds_mormon_temple.jpg" target="_hplink">here</a>.

  • Virginia

    1,122 Mormons per 100,000 persons.

  • Missouri

    1,103 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:St._Louis_Missouri_Temple_by_Ella_Minnow_Peas,_left_frame_only.jpeg" target="_hplink">here</a>.

  • North Dakota

    1,030 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:BismarkTemple7.jpg" target="_hplink">here</a>.

  • Arkansas

    945 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/3/34/Petit_Jean_State_Park_view.jpg" target="_hplink">here</a>.

  • West Virginia

    902 Mormons per 100,000 persons.

  • South Carolina

    808 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Columbia_South_Carolina.jpg" target="_hplink">here</a>.

  • Iowa

    808 Mormons per 100,000 persons.

  • North Carolina

    805 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:RaleighTemple.JPG" target="_hplink">here</a>.

  • Maine

    804 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:A_beach_in_maine_on_a_clear_day.jpg" target="_hplink">here</a>.

  • Georgia

    801 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Atlanta_Georgia_Temple_04.07.07.jpg" target="_hplink">here</a>.

  • Maryland

    738 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Washington_D.C._Temple_At_Dusk.jpg" target="_hplink">here</a>.

  • Kentucky

    737 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Louisville_Kentucky_Temple_by_Foto71.jpeg" target="_hplink">here</a>.

  • Florida

    728 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Orlando_Florida_Temple.jpg" target="_hplink">here</a>.

  • Tennessee

    720 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Memphis_Tennessee_Temple_01.JPG" target="_hplink">here</a>.

  • Alabama

    719 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Birmingham_Alabama_Temple_by_nateOne,_cropped.jpeg" target="_hplink">here</a>.

  • Mississippi

    715 Mormons per 100,000 persons.

  • Vermont

    701 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Burlington,_Vermont.jpg" target="_hplink">here</a>.

  • Indiana

    637 Mormons per 100,000 persons.

  • Louisiana

    630 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Louisiana_State_Capital_at_night.jpg" target="_hplink">here</a>.

  • New Hampshire

    625 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:New_hampshire_in_autumn_.jpg" target="_hplink">here</a>.

  • Minnesota

    577 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:St._Paul_Minnesota_Temple_in_March_2008.jpeg" target="_hplink">here</a>.

  • Delaware

    538 Mormons per 100,000 persons.

  • Ohio

    508 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Columbus_Ohio_Temple_(cropped).png" target="_hplink">here</a>.

  • Illinois

    435 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Chicago_Illinois_Temple3.jpg" target="_hplink">here</a>.

  • Wisconsin

    431 Mormons per 100,000 people.

  • Michigan

    428 Mormons per 100,000 people. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Detroit_Michigan_Temple.jpg" target="_hplink">here</a>.

  • Connecticut

    419 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/0/0a/Nhskyline_eastshore.jpg" target="_hplink">here</a>.

  • New York

    403 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:ManhattanTemple.jpg" target="_hplink">here</a>.

  • Pennsylvania

    392 Mormons per 100,000 persons.

  • Massachusetts

    381 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://en.wikipedia.org/wiki/File:Bostontemple.JPG" target="_hplink">here</a>.

  • Rhode Island

    364 Mormons per 100,000 persons. <br> Credit: Wikimedia Commons. Original photo <a href="http://upload.wikimedia.org/wikipedia/commons/7/73/N3419822_37931820_6163Providence.jpg" target="_hplink">here</a>.

  • New Jersey

    360 Mormons per 100,000 persons.

  • District of Columbia

    70 Mormons per 100,000 people.