I don't think their actions are predicated on the US election.
Their interest is Russia.
They know we are weak at this point in time and, thanks to Obama, it will be some time before our financial power is restored, if ever.
If Obama wins they know they have a pisant wimp to deal with.
If Romnmey wins they know he will need to concentrate on trying to repair the economic damage Obama is leaving him.
Russia wants to rule the oil in the world.
They cannot do that if we are afraid to act. They want disruption there...but they do not want it a glass covered cesspool.
With Obama, there is no control in the world. With Romney, they know they can “deal.” Might not be the best deal...but they can deal. And live.