Wisconsin looking iffy?

Trafalgar has a new Wisconsin poll showing Trump with a 1 point lead, same as their last poll. This is concerning, since it was completed after the Dem convention.

Trafalgar is a Republican pollster but they can’t be easily dismissed. The had a good record in 2016, being the only pollster to call MI and PA correctly.

Looking at RCP, it looks like Biden is performing worse in WI than Hillary was. And she ultimately lost. Biden currently has a 3.5 point average lead in the state.

Should we be concerned?