There is parity when both sides are spending about the same, but one side has an advantage, traditionally that matters. and what's at stake here is there is a significant difference between democrats being at 50-50, which would be the case if they end up losing this race in the united states senate, versus 51-49. and whether that is the more breathing room, to be able to get nominations, and legislation passed in the senate or also how the committees are structured which is different in a 50-50 senate where there is a power sharing agreement, versus 51-49, where the democrats would have a majo...