Democracy will be saved by voting, resisting autocracy, participating in civics, and pushing back on disinformation - it's our civic duty.

And if it's solely reliant on just that, there's little to no chance it will survive because we need Congress to have the stomach to act to preserve democracy. The word itself is not mentioned verbatim in the Constitution however the process itself is, because the vote is enshrined in the Constitution and the vote is the core of democracy itself.
Devaluing or crippling the vote is devaluing and crippling the Constitution.