politics

That's still important if the actual race began now and the finish-line was November 5th. What I mean is that if you're 5 kilometers back when you were even at the same point last time in the race, then no matter what it's generally going to be harder to make up that ground by the end of the race. Something has to change where voters are now versus November no differently than making up the difference between runners in a Marathon.

And this data can (a) be useful to change strategy (e.g., Biden stepping down; Harris stepping up or less drastic: altering campaign messaging), and (b) positive momentum tends to excite the base. People like to see positive results. The beauty is that the Harris campaign is still framing themselves as the underdogs — which they are, but it also helps offset any risk to complacency with overconfident voters. Understanding Polls:

• Individual polls from reputable pollsters can be a barometer for a snapshot in time, but they may also be outliers.
• An aggregation of many reputable polls during the same period of time is a more accurate snapshot in time.
• An aggregation of many polling snapshots over a period of time can show a Trend.
• Long-term trends can be very useful and give more extrapolative trajectories (e.g., the long-term downward decline of Biden's aggregate national approval ratings and his steady decline in swing-states leading to a change in strategy and his stepping down).
• Still, such polls may not accurately represent fringe groups (though many pollsters compensate in a variety of ways).
• We shouldn't just blindly follow the polls (blind-leading-the-blind mentality)—e.g., if the case is never made for something, then it never gets popular. Bernie Sanders heavily advocated for Universal Healthcare and we of course have seen an adjustment in polling instead of simply reacting to its initial unpopularity—but we also shouldn't ignore trends.
• Polls don't dictate what people do in the moment, or say or do later; instead, they're a reflection of where they say they'll do in the moment.
• Every advocate should have the mindset of trying to change polls to their advantage; this by active campaigning (canvassing, phone-banking, fundraising, etc.), change of messaging, etc.
• Context should always be considered when discussing polling. (e.g., in isolation, Biden's debate could be considered, "just one bad night, and we can swing polls back," without considering the long-term concern that was already present over his immutable vice — age/cognitive-decline.)
• No matter what the polls say, winning, tying, or losing... Always and I mean always Register and VOTE. Not just this, but drag 3-5 other people to register and vote with you.

You have any proof? If so, I'm happy to stand corrected.

I mean, yeah, but even statisticians should understand that rando internet people would feel the way that the original commenter does. It makes perfect sense.