Unless people stay home which is how it happens... People too lazy to vote.
I have always voted in national and state elections. Not sure why you would not.
Is there really any reason to vote in Federal Elections?
D.C. is probably the most corrupt capital in the world and everyone that goes there is either bought off and/or blackmailed to do as they are told. Most forget what state they come from and who elected them and their allegiance is to the Military industrial Complex, The Deep State and Israel, not necessarily in that order.
I have come to the realization of what purpose voting Federally really does. Now state and local I think change, etc., is still possible, after that no. I think I have voted in my last presidential election, I have pretty much quit voting in House and Senate races.