Elections won't be canceled. They're too important for the perception of legitimacy. Virtually every country on Earth now has elections. Russia, China, even North Korea has elections.
The modern playbook isn't to abolish elections, it's a combination of blocking opposition candidates, suppressing votes, intimidating voters, and lying about the results. That's what to watch for.
It's fairly easy to abuse a state of exception to cancel elections. Ukraine has done it, and it's been, along with banning opposition parties and attempting to imprison critics (Arestovych, etc.), a critical step in their government consolidating power.
“Watch for”? That has been actively happening, at an accelerating pace. (Especially if you count “lying about someone else lying about the results”.)