I’d like to see confirmation from another poll before celebrating. Mack had *not* been polling well recently.
There was a Quinnipiac from June 23 which had Nelson 43%, Mack 39%, and one from June 27 which had Nelson 41%, Mack 40%. Still a lot of people undecided.
An incumbent polling around only 40% in three polls a few weeks apart is not going to get the job done.