What does "steal the election" mean?

The president can’t cancel the 2020 presidential election, but he can find ways to “steal” it, as Joe Biden said last night. The debacle in Georgia Tuesday is a case in point. The Washington press corps doesn’t seem to be taking the possibility seriously. I suppose it’s hard to take something seriously when it sounds so impossible. In any event, if the press corps has a bias, it’s a bias toward the status quo.

Am I making too much of this? If not, why? Let me know your thoughts. —John Stoehr