Your vote in the next legislative election and/or presidential election...

[Peter the Lefty]

UK-Green
Ireland-Fis Nua
Iceland-Social Democratic Alliance
France-Left Front/Cecile Duflot, hopefully.  Wouldn't want Melanchon as President. 
Germany-The Left
Italy-SEL
Spain-PODEMOS
Portugal-PS.  I actually like Seguro.
Sweden-SAP
Norway-Socialist Left
Finland-Left Alliance, though possibly switching if the Social Democrats' new leader impresses me/Green Candidate
Denmark-Red-Green Alliance
Austria-The Greens/The Green candidate
Hungary-MSzP, probably. 
Greece-SYRIZA
Belgium-The Green Parties
Netherlands-SP
Poland-Labor Party, very reluctantly/would depend.  Any leftist who wasn't in the Communist party back in the day would be nice.
Russia-That group Gorbachev tried to found but was barred from/write in Garry Kasparov
Japan-Social Democratic Party
Turkey-CHP
South Korea-Justice Party
India-Indian Communist Party (non-Marxist)
Australia-Greens
New Zealand-Labour
South Africa-Isn't COSATU about to found a party?  Them, please.
Brazil-PSOL/Randolfe Rodrigues
Argentina-PS/Hermes Binner
Chile-PS/Michele Bachelet
Venezuela-PODEMOS, Movement for Socialism, any other leftist anti-Chavez parties/write in one of their names.
Jamaica-PNP
Mexico-PRD/Whoever they nominate, though I hope it's not AMLO again
US-Progressive Democrats only/Jill Stein, most likely