Smart Voting

Smart Voting (Russian: Умное голосование, tr. Umnoye golosovaniye) is a tactical voting strategy put forward by the team of Alexei Navalny with the aim of depriving the ruling United Russia party of votes in regional and federal elections. The goal of Smart Voting is to consolidate the votes of those who oppose the party which Navalny dubbed as the "party of crooks and thieves".

More at Wikipedia (eng.)