Warnock is the incumbent and polled better than Walker did, getting a lot closer to the magic 50% without actually making it. Given that His Royal Orangeness has just announced he's running again, Walker is a shot duck.
About as much as there was in 2020, ie none at all. The GOP is trying like hell to steal the 2024 election by disenfranchising millions of Americans, targeting the demographic that votes Democrat as part of their religion.
Please, no chain of evidence, video of the pulling out ballots after sending everyone else home, removing observers, claiming a water main broke a (actually just a toilet overflowed) , systems connected to the internet, video of ballots being scanned more than once etc...