2026 ballot measure forecast

Missouri Amendment 3

Repeal 2024 abortion rights amendment, restrict abortion

Repeals the 2024 reproductive freedom amendment, allows abortion only for medical emergencies, fetal anomalies, and rape or incest before 12 weeks, requires parental consent for minors, permits regulation, and bans gender transition procedures for minors. The forecast has Yes at 48.5 percent against the 50 percent it needs, a 42% chance to pass.

Toss upConstitutional amendment referred by the legislatureAbortionUpdated October 22, 2026
Chance to pass
42%
2,000 simulations
Forecast Yes
48.5%
80% range 40 to 57
Needs
50%
a simple majority
Polling average
47.4%
Yes, with undecided split two to one for No
Where the Yes vote lands
needs 50
2035506580
History and structure
50.0% Yes
Polls
47.4% Yes
Forecast
48.5% Yes
Yes leans
Republican
Rule to pass
Simple majority. HCS HJR 73 (2025).
The campaign

Yes: GOP legislature, Missouri Catholic Conference and anti-abortion groups. No: abortion rights coalition campaign launched May 27, 2026. Money not captured.

Amendment 3 by county

Adair CountyAndrew CountyAtchison CountyAudrain CountyBarry CountyBarton CountyBates CountyBenton CountyBollinger CountyBoone CountyBuchanan CountyButler CountyCaldwell CountyCallaway CountyCamden CountyCape Girardeau CountyCarroll CountyCarter CountyCass CountyCedar CountyChariton CountyChristian CountyClark CountyClay CountyClinton CountyCole CountyCooper CountyCrawford CountyDade CountyDallas CountyDaviess CountyDeKalb CountyDent CountyDouglas CountyDunklin CountyFranklin CountyGasconade CountyGentry CountyGreene CountyGrundy CountyHarrison CountyHenry CountyHickory CountyHolt CountyHoward CountyHowell CountyIron CountyJackson CountyJasper CountyJefferson CountyJohnson CountyKnox CountyLaclede CountyLafayette CountyLawrence CountyLewis CountyLincoln CountyLinn CountyLivingston CountyMcDonald CountyMacon CountyMadison CountyMaries CountyMarion CountyMercer CountyMiller CountyMississippi CountyMoniteau CountyMonroe CountyMontgomery CountyMorgan CountyNew Madrid CountyNewton CountyNodaway CountyOregon CountyOsage CountyOzark CountyPemiscot CountyPerry CountyPettis CountyPhelps CountyPike CountyPlatte CountyPolk CountyPulaski CountyPutnam CountyRalls CountyRandolph CountyRay CountyReynolds CountyRipley CountySt. Charles CountySt. Clair CountySte. Genevieve CountySt. Francois CountySt. Louis CountySaline CountySchuyler CountyScotland CountyScott CountyShannon CountyShelby CountyStoddard CountyStone CountySullivan CountyTaney CountyTexas CountyVernon CountyWarren CountyWashington CountyWayne CountyWebster CountyWorth CountyWright CountySt. Louis CountySt. LouisJacksonSt. CharlesGreeneClayJeffersonBooneCassPlatteFranklinJasperChristian
No +30Yes +30Click a county to zoom · arrow keys step through counties by size
Where the margin is won
Jefferson County: Yes +8,541Christian County: Yes +7,924Jasper County: Yes +6,727Franklin County: Yes +6,599Lincoln County: Yes +5,639Newton County: Yes +5,621Taney County: Yes +5,282Cape Girardeau County: Yes +5,034Howell County: Yes +4,603St. Francois County: Yes +4,249Webster County: Yes +4,247Camden County: Yes +4,220Laclede County: Yes +4,152Lawrence County: Yes +4,128Butler County: Yes +3,984Stoddard County: Yes +3,969Stone County: Yes +3,965Barry County: Yes +3,578Scott County: Yes +3,371Polk County: Yes +3,354Miller County: Yes +3,221Texas County: Yes +3,191Cass County: Yes +2,900Warren County: Yes +2,786Wright County: Yes +2,769Pettis County: Yes +2,553Cole County: Yes +2,464McDonald County: Yes +2,399Pulaski County: Yes +2,371Lafayette County: Yes +2,351Washington County: Yes +2,348Crawford County: Yes +2,285Callaway County: Yes +2,276Osage County: Yes +2,253Perry County: Yes +2,170Dunklin County: Yes +2,112Johnson County: Yes +2,082Marion County: Yes +2,079Benton County: Yes +2,052Douglas County: Yes +2,049Phelps County: Yes +2,036Dallas County: Yes +1,921Morgan County: Yes +1,909Dent County: Yes +1,894Cedar County: Yes +1,890Bollinger County: Yes +1,858Vernon County: Yes +1,755Bates County: Yes +1,747Randolph County: Yes +1,695Henry County: Yes +1,691Barton County: Yes +1,690Ripley County: Yes +1,670Wayne County: Yes +1,647Macon County: Yes +1,632Gasconade County: Yes +1,600Moniteau County: Yes +1,587Ray County: Yes +1,553Andrew County: Yes +1,504Clinton County: Yes +1,461Pike County: Yes +1,453Audrain County: Yes +1,347Madison County: Yes +1,317Livingston County: Yes +1,274Ozark County: Yes +1,255Montgomery County: Yes +1,197Maries County: Yes +1,194Oregon County: Yes +1,191Ralls County: Yes +1,120Ste. Genevieve County: Yes +1,111New Madrid County: Yes +1,091Nodaway County: Yes +1,060Harrison County: Yes +1,057Cooper County: Yes +1,051DeKalb County: Yes +1,046Hickory County: Yes +1,043Linn County: Yes +1,039Buchanan County: Yes +1,035Carroll County: Yes +1,030Dade County: Yes +1,023Shannon County: Yes +1,012St. Clair County: Yes +1,007Caldwell County: Yes +979Grundy County: Yes +969Iron County: Yes +969Lewis County: Yes +903Monroe County: Yes +867Daviess County: Yes +863Saline County: Yes +851Carter County: Yes +843Reynolds County: Yes +771Shelby County: Yes +768Chariton County: Yes +726Mississippi County: Yes +725Pemiscot County: Yes +715Gentry County: Yes +695Clark County: Yes +689Putnam County: Yes +633Holt County: Yes +606Adair County: Yes +591Sullivan County: Yes +585Howard County: Yes +560Atchison County: Yes +540Mercer County: Yes +518Schuyler County: Yes +444Knox County: Yes +413Scotland County: Yes +400Worth County: Yes +253St. Louis County: No +103,541St. Louis County: No +48,523Jackson County: No +26,250Boone County: No +13,241Clay County: No +9,685St. Charles County: No +5,244Platte County: No +4,997Greene County: No +738
Yes +223,467 net votes from 107 countiesStatewide Yes +0.6, a 11,248 vote marginNo +212,219 net votes from 8 counties

Projected vote

1,783,942 votes on the question
ChoiceVotesShare
Yes897,59550.3%
No886,34749.7%
Total1,783,942100%
CountyYesNoTotalYes share
St. Louis County101,404204,945306,34933.1%
Jackson County82,583108,833191,41643.1%
St. Charles County64,43469,678134,11248.0%
Greene County42,19442,93285,12649.6%
Clay County33,64843,33376,98143.7%
St. Louis County13,43661,95975,39517.8%
Jefferson County38,97230,43169,40356.2%
Boone County20,99434,23555,22938.0%
Cass County18,84715,94734,79454.2%
Platte County14,77919,77634,55542.8%
Franklin County19,45112,85232,30360.2%
Jasper County19,10812,38131,48960.7%
Christian County18,93011,00629,93663.2%
Cape Girardeau County14,4959,46123,95660.5%
Cole County13,14210,67823,82055.2%
Buchanan County10,9399,90420,84352.5%
Lincoln County12,1836,54418,72765.1%
Newton County11,3575,73617,09366.4%
St. Francois County10,4226,17316,59562.8%
Taney County10,5155,23315,74866.8%
Camden County9,5415,32114,86264.2%
Johnson County8,0555,97314,02857.4%
Callaway County7,3995,12312,52259.1%
Warren County7,2494,46311,71261.9%
Webster County7,9233,67611,59968.3%
Phelps County6,7394,70311,44258.9%
Stone County7,5513,58611,13767.8%
Howell County7,8343,23111,06570.8%
Pettis County6,7624,20910,97161.6%
Lawrence County7,4443,31610,76069.2%
Butler County7,2003,21610,41669.1%
Scott County6,8073,43610,24366.5%
Lafayette County6,2143,86310,07761.7%
Laclede County7,0542,9029,95670.9%
Pulaski County5,9943,6239,61762.3%
Barry County6,4932,9159,40869.0%
Polk County6,3242,9709,29468.0%
Stoddard County5,9571,9887,94575.0%
Marion County4,8802,8017,68163.5%
Miller County5,4172,1967,61371.2%
Ray County4,1442,5916,73561.5%
Texas County4,9631,7726,73573.7%
Clinton County3,9942,5336,52761.2%
Randolph County4,0532,3586,41163.2%
Henry County4,0022,3116,31363.4%
Crawford County4,2751,9906,26568.2%
Benton County4,1232,0716,19466.6%
Adair County3,3772,7866,16354.8%
Audrain County3,7162,3696,08561.1%
Washington County4,1301,7825,91269.9%
Dunklin County3,9891,8775,86668.0%
Andrew County3,6332,1295,76263.1%
Nodaway County3,4062,3465,75259.2%
Perry County3,9521,7825,73468.9%
Ste. Genevieve County3,3772,2665,64359.8%
Morgan County3,7641,8555,61967.0%
Saline County3,1732,3225,49557.7%
McDonald County3,9351,5365,47171.9%
Wright County4,0241,2555,27976.2%
Vernon County3,4771,7225,19966.9%
Cooper County3,1102,0595,16960.2%
Dallas County3,4121,4914,90369.6%
Bates County3,3021,5554,85768.0%
Gasconade County3,1221,5224,64467.2%
Osage County3,4191,1664,58574.6%
Macon County3,1021,4704,57267.8%
Pike County2,9991,5464,54566.0%
Douglas County3,1741,1254,29973.8%
Moniteau County2,9171,3304,24768.7%
Cedar County3,0461,1564,20272.5%
Dent County3,0181,1244,14272.9%
Livingston County2,6351,3613,99665.9%
New Madrid County2,5311,4403,97163.7%
Bollinger County2,7448863,63075.6%
Barton County2,6149243,53873.9%
Montgomery County2,3421,1453,48767.2%
Ripley County2,5418713,41274.5%
Wayne County2,5268793,40574.2%
Ralls County2,2371,1173,35466.7%
Madison County2,3261,0093,33569.7%
Linn County2,1681,1293,29765.8%
Pemiscot County1,9061,1913,09761.5%
Hickory County2,0009572,95767.6%
Howard County1,7431,1832,92659.6%
St. Clair County1,9479402,88767.4%
DeKalb County1,9278812,80868.6%
Maries County1,9998052,80471.3%
Ozark County2,0117562,76772.7%
Caldwell County1,8638842,74767.8%
Oregon County1,9427512,69372.1%
Carroll County1,8388082,64669.5%
Lewis County1,7658622,62767.2%
Iron County1,7958262,62168.5%
Mississippi County1,6729472,61963.8%
Grundy County1,7597902,54969.0%
Monroe County1,7048372,54167.1%
Dade County1,7307072,43771.0%
Chariton County1,5578312,38865.2%
Shannon County1,6796672,34671.6%
Daviess County1,5727092,28168.9%
Harrison County1,6485912,23973.6%
Clark County1,3086191,92767.9%
Gentry County1,3116161,92768.0%
Shelby County1,3405721,91270.1%
Reynolds County1,2745031,77771.7%
Carter County1,2624191,68175.1%
Atchison County1,0585181,57667.1%
Sullivan County1,0104251,43570.4%
Putnam County1,0123791,39172.8%
Holt County9913851,37672.0%
Schuyler County7873431,13069.6%
Scotland County7553551,11068.0%
Mercer County7872691,05674.5%
Knox County7333201,05369.6%
Worth County44819564369.7%

Projected 2026 votes: each county's expected turnout, less the roughly 6 percent of voters who skip a ballot question, times its forecast Yes share. The measure needs 50.0 percent Yes to pass.

Polls of the measure

2 polls
PollsterSampleEndedYesNoUndecidedYes, adjusted
YouGov900 LV2026-08-2443441347.3%
YouGov900 LV2026-02-2247401251.5%
How this is built
Amendment 3 is forecast as a abortion measure whose Yes vote leans Republican. Comparable measures from 2018 to 2024 set how far its Yes share moves with Missouri's partisanship and with each county's 2024 presidential vote, and how it reached the ballot moves it further. Polls then pull the forecast toward them by recency and size, after splitting undecided voters two to one for No. Sources: sos.mo.gov, slu.edu, missouriindependent.com, missouriindependent.com. All measures.