Trotsky and most of the Iskra editors supported Martov and the Mensheviks while Plekhanov supported Lenin and the Bolsheviks. Pro-Iskra delegates unexpectedly split into two factions, Lenin and his supporters (known as Bolsheviks) argued for a smaller but highly organized party, Martov and his supporters (known as Mensheviks) argued for a larger and less disciplined party