I find it curious that this line of thinking has only recently cropped up. Assange and by extension WikiLeaks has literally never claimed that they weren't partisans. Their whole mission statement is basically leaking things when they would make the biggest impact, and they've pretty much always done their big info dumps at opportune times when they would make the biggest noise. Should they have waited on the emails until after the election? Why? Why does it matter who or what Assange sides with, if the things he releases are 100% true?
I don't remember seeing these same criticisms back in 2010 during the cable leaks, curious that this is only an issue now, after the light is being shined on the democrats rather than the republicans for a change...