IOTL, one major reason for the collapse of popular support for the less radical Mensheviks was the Menshevik support under the leadership of Irakli Tsereteli for continuation of the war. Though the Mensheviks did not want annexations, they also weren't willing to lose vast tracts of Russian land in a peace deal, and so they lost the wide base of support they had previously held among the soldiers. This is oversimplifying things for sure, but what if— for whatever reason— Tsereteli's political calculus was a fair bit different on this issue and the Mensheviks supported withdrawal from WW1 in a sense similar to the Bolsheviks? Would they have had greater say in the government of Russia, or a stronger hand in a hypothetical Civil War? And what would that have looked like?