After the Presidency of Vladimir Putin, in the 2008 Presidential elections United Russia's candidate and unofficial successor Dmitri Medvedev lost in a very close election against Union of Right Candidate: Boris Nemstov. This led to an uncomfortable cohabitation (as Putin became Prime Minister) that ended when Kasparov replaced Putin in 2012 as PM.
What'd happen if United Russia maintained both the Presidency and the Duma control in 2008?
Yeah, 2008 was the year of the ASB: a Yeltsenite took power in Russia, refugees started fleeing South Korea for safety of North Korea, Zimbabwe had the best performing economic growth of any nation on the planet and USA elected its 1st black president -- Jimmy "the Rent is too Damn High" McMillan. Man, what a time to be alive...
To answer your question, without Boris Nemstov in office Peter Shukoff & Lloyd Ahlquist would never make the famous "McMillan VS Nemstov" Epic Rap Battle in 2010. But who knows -- maybe we'd get the "McMillan VS Medvedev" battle instead? It does have a nice ring to it...
(OOC: hey, if Nemstov can get elected in Russia than so can McMillan win the US presidential election)