This is encouraging:
This is within the margin of error, and McSally has been steadily closing the gap since the late GOP primary. As I wrote last week, the Democrats' behavior in the Kavanaugh confirmation has re-energized voters who were not exactly big fans of the GOP heading into November. They have managed to do so by putting the focus squarely on what lost them the 2016: fears about the future of the Supreme Court. I've seen anecdotal evidence about people donating to Republicans in close Senate campaigns. I left the GOP in 2016 and hadn't donated to the party since early 2012. In the past week I've donated to the NRSC, the NRCC, and McSally's campaign. I'm probably not done year.
Again, I don't think the Democrats had planned on this.