The 1905 Revolution was not a Communist revolution. It was a popular movement simply to have a constitution. The organization of the Bolsheviks was not what it needed to be in order for them to seize power like they did in October 1917. The closest we could get, IMO, is a constitution guaranteeing a more liberal Duma (not one where more than half the members were appointed by the Tsar) where the Bolsheviks manage to gain a large amount of seats and then, by parliamentary process, managed to dethrone the Tsar. But this would probably have a Russian Soviet Federative Socialist Republic later than 1917, probably not before. (Remember, the USSR wasn't incorporated until 1921 IOTL)