This is going to be a rather boring exercise.
United States:
Socialist AlternativeUnited Kingdom
England:
Socialist Party of England and Wales Wales:
Socialist Party of England and Wales Scotland:
Socialist Party Scotland Northern Ireland:
Socialist Party of IrelandCanada:
Socialist Alternative Quebec:
Socialist AlternativeAustralia:
Socialist PartyNew Zealand:
Socialist VoiceFrance:
Revolutionary LeftSpain:
Revolutionary SocialismGermany:
Socialist AlternativeItaly:
CountercurrentAustria:
Socialist Left PartyPoland:
Socialist AlternativeCzech Republic:
Socialist Alternative FutureSlovakia:
99 Percent - Civic VoiceSlovenia:
United LeftRomania:
Socialist Alternative PartyDenmark:
Red-Green AllianceNorway:
Red PartySweden:
Socialist Justice PartyFinland:
Socialist AlternativeIceland:
People's Front of IcelandJapan:
International SolidarityTaiwan:
Committee for a Worker's International (Taiwan)South Korea:
Labor PartySouth Africa:
Workers and Socialist PartyIsrael:
Socialist StruggleEgypt:
Revolutionary SocialistsGreece:
XekinimaTurkey:
Socialist AlternativeIndia:
New Socialist AlternativePakistan:
Socialist Movement PakistanMexico:
Labor PartyBrazil:
Freedom, Socialism, and RevolutionArgentina:
Workers' Left FrontChile:
Revolutionary SocialismTold you so. In any case, although I listed CWI affiliates in Greece and Spain, I would more likely than not vote for Podemos and Syriza, assuming the CWI affiliate in question was not running a candidate in opposition to either organization in the nation in question.