You tell them:
A despicable person won the Presidency. And the only reason this matters is because government is too big, too powerful, has too much control over people’s lives; it matters because the Presidency is a position – of controlling other people’s lives – that too many people place too much respect in; it matters because the system worked exactly the way the system is supposed to work.
When the system does what it does and produces this result…it’s a bad system. We need a new system.
The great thing about this narrative? It’s right regardless of which candidate won yesterday.