The 20th Legislative Assembly of Ontario was in session from October 6, 1937, until June 30, 1943, just prior to the 1943 general election. The majority party was the Ontario Liberal Party led by Mitchell Hepburn.

In 1938, the title "Member of Provincial Parliament", abbreviated as "MPP", was officially adopted by the members of the legislative assembly.

Hepburn resigned as Premier in October 1942, remaining party leader, and Gordon Daniel Conant became Premier. In 1943, Harry Nixon became both party leader and Premier after a leadership convention was held for the provincial Liberal party.

Norman Otto Hipel served as speaker for the assembly until September 2, 1938. James Howard Clark replaced Hipel as speaker.

Members of the Assembly RidingMemberPartyFirst elected / previously electedNo. of termsAddingtonWilliam David BlackConservative/Prog. Conservative19118th termAlgoma—ManitoulinWilfred Lynn MillerLiberal19342nd termBeachesThomas Alexander MurphyConservative/Prog. Conservative19264th termBellwoodsArthur Wentworth RoebuckLiberal19342nd termBracondaleLionel Pretoria ConacherLiberal19371st termBrantHarry Corwin NixonLiberal19196th termBrantfordMorrison Mann MacBrideIndependent-Liberal1919, 19344th term*Louis Hagey (1938)Liberal19381st termBruceJohn William SinclairLiberal19342nd termCarletonAdam Holland AcresConservative/Prog. Conservative19235th termCochrane NorthJoseph-Anaclet HabelLiberal19342nd termCochrane SouthCharles Vincent GallagherLiberal19371st termDovercourtWilliam DuckworthConservative/Prog. Conservative19342nd termDufferin—SimcoeAlfred Wallace DownerConservative/Prog. Conservative19371st termDurhamCecil George MercerLiberal19371st termEglintonHarold James KirbyLiberal19342nd termElginMitchell Frederick HepburnLiberal19342nd termEssex NorthAdélard Charles TrottierLiberal19342nd termEssex SouthCharles George FletcherLiberal1926, 19372nd term*Fort WilliamFranklin Harford SpenceConservative/Prog. Conservative1923, 19374th term*GlengarryEdmund MacGillivrayLiberal19371st termGrenville—DundasGeorge Holmes ChalliesConservative/Prog. Conservative19293rd termGrey NorthRoland PattersonLiberal-Progressive19342nd termGrey SouthFarquhar Robert OliverUnited Farmers19264th termLiberalHaldimand—NorfolkEric William Blake CrossLiberal19371st termHaltonThomas Aston BlakelockLiberal19293rd termHamilton CentreWilliam Frederick SchwengerLiberal19342nd termJohn Newlands (1938)Liberal19381st termHamilton EastJohn P. MacKayLiberal19371st termHamilton—WentworthThomas Baker McQuestenLiberal19342nd termHastings EastHarold Edward WelshConservative/Prog. Conservative19362nd termHastings WestRichard Duke ArnottConservative/Prog. Conservative19371st termHigh ParkWilliam Alexander BairdConservative/Prog. Conservative19264th termHuronJames Simpson BallantyneLiberal19342nd termHuron—BruceCharles Alexander RobertsonLiberal19264th termKenoraPeter HeenanLiberal1919, 19344th term*Kent EastDouglas Munro CampbellLiberal-Progressive19343rd termKent WestArthur St. Clair GordonLiberal19342nd termKingstonThomas Ashmore KiddConservative19264th termLambton EastMilton Duncan McVicarLiberal19342nd termCharles Oliver Fairbank (1938)Liberal19381st termLambton WestWilliam GuthrieLiberal19342nd termLanarkGeorge Henry DoucettConservative/Prog. Conservative19371st termLeedsWalter Bain ReynoldsConservative/Prog. Conservative19371st termLincolnArchibald Judson HainesLiberal19371st termLondonArchibald Stuart DuncanLiberal19342nd termMiddlesex NorthJohn Willard FreebornLiberal1919, 19344th term*Middlesex SouthCharles Maitland MacFieLiberal19342nd termMuskoka—OntarioJames Francis KellyLiberal19342nd termNiagara FallsWilliam HouckLiberal19342nd termNipissingJoseph Elie CholetteLiberal19371st termNorthumberlandHarold Norman CarrLiberal19342nd termOntarioGordon Daniel ConantLiberal19371st termOttawa EastMarie Charles Denis Paul LeducLiberal19342nd termRobert Laurier (1940)Liberal19401st termOttawa SouthGeorge Harrison DunbarConservative/Prog. Conservative19371st termOxfordPatrick Michael DewanLiberal19342nd termParkdaleFrederick George McBrienConservative1923, 19374th term*William James Stewart (1938)Conservative/Prog. Conservative19381st termParry SoundMilton Taylor ArmstrongLiberal19342nd termPeelThomas Laird KennedyConservative/Prog. Conservative1919, 19375th term*PerthWilliam Angus DicksonLiberal19342nd termPeterboroughAlexander Leslie ElliottLiberal19371st termPort ArthurCharles Winnans CoxLiberal19342nd termPrescottAurélien BélangerLiberal1923, 19344th term*Prince Edward—LennoxJames de Congalton HepburnConservative/Prog. Conservative19371st termRainy RiverRandolph George CroomeLiberal19342nd termRenfrew NorthJohn Courtland BradleyLiberal19342nd termRenfrew SouthThomas Patrick MurrayLiberal19293rd termRiverdaleWilliam SummervilleConservative/Prog. Conservative19371st termRussellRomeo BéginLiberal19371st termSault Ste. MarieRichard McMeekinLiberal19371st termColin Alexander Campbell (1937)Liberal19371st termSimcoe CentreLeonard Jennett SimpsonLiberal19293rd termDuncan McArthur (1940)Liberal19401st termSimcoe EastWilliam FinlaysonConservative1923, 19374th term*George Alexander Drew (1939)Conservative/Prog. Conservative19391st termSt. AndrewJohn Judah GlassLiberal19342nd termSt. DavidAllan Austin LamportLiberal19371st termSt. GeorgeIan Thomas StrachanLiberal19342nd termSt. PatrickFrederick Fraser HunterLiberal19342nd termStormontFergus Beck BrownridgeLiberal19342nd termSudburyJames Maxwell CooperLiberal19371st termTimiskamingWilliam Glennie NixonLiberal19342nd termVictoriaLeslie Miscampbell FrostConservative/Prog. Conservative19371st termWaterloo NorthJustus Albert SmithLiberal19371st termWaterloo SouthNorman Otto HipelLiberal19303rd termWellandEdward James AndersonLiberal19342nd termWellington NorthRoss Atkinson McEwingLiberal19371st termWellington SouthJames Harold KingLiberal19342nd termWentworthGeorge Henry BethuneLiberal19342nd termWindsor—SandwichJames Howard ClarkLiberal19342nd termWindsor—WalkervilleDavid Arnold CrollLiberal19342nd termWoodbineGoldwin Corlett ElgieConservative/Prog. Conservative19342nd termYork EastGeorge Stewart HenryConservative/Prog. Conservative19138th termYork NorthMorgan BakerLiberal19342nd termYork SouthLeopold MacaulayConservative/Prog. Conservative19264th termYork WestWilliam James GardhouseLiberal19342nd term

Timeline + 20th Legislative Assembly of Ontario - Movement in seats held (1937–1943)Party1937Gain/(loss) due to1943 Changedparty Deathin office Resignationas MPP Byelectiongain Byelectionhold62 2 (4) (7) 1 5 5923 (4) (2) 2 193 (1) 21 (1) –1 (1) –– 5 5 10Total 90 – (4) (4) 1 7 90

+ Changes in seats held (1937–1943) Seat Before ChangeDateMemberPartyReasonDateMemberPartySault Ste. MarieOctober 20, 1937Richard McMeekinResigned to allow Campbell to enter provincial politicsNovember 23, 1937Colin Alexander CampbellHamilton CentreJanuary 26, 1938William Frederick SchwengerAppointed to BenchMarch 2, 1938John NewlandsLambton EastFebruary 3, 1938Milton Duncan McVicarDied in officeMarch 22, 1938Charles Oliver FairbankBrantfordJune 5, 1938Morrison Mann MacBrideDied in officeJuly 20, 1938 Louis HageyParkdaleJuly 2, 1938Fred McBrienDied in officeOctober 5, 1938William James StewartSimcoe EastJanuary 13, 1939William FinlaysonResigned to enable Drew to gain seat as new party leaderFebruary 14, 1939George DrewKingstonMarch 7, 1940Thomas Ashmore KiddChose to stand in Kingston City in the 1940 federal electionBellwoodsMarch 8, 1940Arthur Wentworth RoebuckChose to stand in Trinity in the 1940 federal electionHuron—BruceMarch 22, 1940Charles Alexander RobertsonDied in officeCochrane SouthMay 28, 1940Charles Vincent GallagherDied in officeHigh ParkMay 30, 1940William Alexander BairdDied in officeSimcoe CentreAugust 18, 1940Leonard Jennett SimpsonDied in officeOctober 23, 1940Duncan McArthurOttawa EastSeptember 27, 1940Paul LeducAppointed Registrar of Supreme Court of CanadaNovember 27, 1940Robert LaurierGrey SouthJanuary 23, 1941Farquhar OliverAppointed Minister of Public WorksFebruary 24, 1941Farquhar Robert OliverLincolnJanuary 10, 1942Archibald Judson HainesResigned, in protest of a liquor licence being issued despite prior guarantees that it would not happen.Fort WilliamJanuary 16, 1943Franklin Harford SpenceDied in officeOntarioMay 18, 1943Gordon Daniel ConantAppointed Master of the Supreme Court of Ontario.Hastings EastMay 20, 1943Harold Edward WelshDied in office, having drowned while fishing in Algonquin Provincial Park.St. GeorgeJune 1, 1943Ian Thomas StrachanAppointed Registrar of Deeds for the City of Toronto.

External links Members in Parliament 20

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