to be honest, I don't think the Kerensky government stood a chance anyway. shit was just too hectic. I do think that if the whites were more united and had better propaganda skills they might have been able to beat the Bolsheviks, or at least carve out a piece of Asian Russia for themselves
If the Kerensky government pulled out of the war when they took power their chances would have been at least 50/50. Why? The Germans were holding Lenin at the time and when the Provisional government said they would stay in on the side of the British etc Lenin said he would pull Russia out of the war. Lenin went back to Russia and had by some accounts 5 million in gold to finance his Revolution. The same offer was reportedly made to Kerensky and he said no. Now if Kerensky had taken the German offer Lenin would still be a prisoner in Germany, not Russia so no central Bolshevik leadership, it would be fractured between Trotsky and to some extent Stalin. Between the popular move of getting Russia out of the war, 5 million in gold and no Lenin leading the Bolsheviks Kerensky's chances of survival increase dramatically. No certainty of course, there would be fighting for control of Russia but with the aforementioned reasons Kerensky might well have survived.