I think that “wipes out” here is referring to the lead that Trump had in the polls previously. All the states went from a clear lead for Trump over Biden, to basically even, with one exception showing a clear lead.

I think that it suggests a competitive race, rather than one side coasting to victory. It is hard to draw concrete conclusions still, but the clear lead is definitely gone

I think it was John Stewart said we’re happy to have gone from Trump lead to statistical tie.