In the US, right now, who holds power is still decided by who gets the most votes in elections. Even non-swing-states have congressional races, races for state legislature, and elections for local government.
It can certainly happen when things are close, as they are now. Even if all you do is change it from “close” to “not close” the impact is to keep it out of the courts.
This presumes that a vote has an impact.
In the US, right now, who holds power is still decided by who gets the most votes in elections. Even non-swing-states have congressional races, races for state legislature, and elections for local government.
If you’re in a spot where you think your local vote won’t be close, you can volunteer to turn others out to vote
But a vote doesn’t have an impact.
It can certainly happen when things are close, as they are now. Even if all you do is change it from “close” to “not close” the impact is to keep it out of the courts.
What can?