I don't know VA very well, but holding the AG's office, I would guess, should be considered very significant.
It was Cuccinelli who let the state AGs' suit Obamacare that went to the SCOTUS, where Roberts was compromised on his notorious decision. There may be other legal grounds to file state suits against Obamacare in the future, and a 'Rat AG would have eliminated that possibility.
Also, Republican control the AG office could act as a deterrent factor against 'Rat voting fraud and cheating, especially considering the how the dynamics of the 2016 presidential election could be shaping up.
It is important for many reasons, getting shut out of the 3 statewide offices would have been horrible. Obershain (if they don’t rob him of his office) must now be considered the GOP frontrunner for Governor in 2017.