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Let's talk polls and betting odds

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New South Carolina poll today has Trump only up +7. He's obviously going to win it but that+the Kansas poll show some slippage
"A" new South Carolina poll...
There is also "A" MN poll that shows Harris is only +3. FTR, I don't buy it or the SC poll, but which one would indicate a more dramatic slippage?

Also, there is no serious polling going on in SC. The ones I am looking at right now are from ECU and Winthrop...both of which have Trump +13 and +10, respectively... although they are somewhat dated. at 10/22 and 9/29, respectively.
 
538 Updates:
  • Harris now only up 1.2% in national popular vote. Biden was +8.4% in 2020.
  • Trump leads in NV (+0.1), PA (+0.3), NC (+1.3), GA (+1.6) and AZ (+2.3)
  • Harris leads in WI (+0.7), MI (+1.1)
  • Trump wins with PA/NC/GA/AZ
 
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538 Updates:
  • Harris now only up 1.2% in national popular vote. Biden was +8.4% in 2020.
  • Trump leads in NV (+0.1), PA (+0.3), NC (+1.3), GA (+1.6) and AZ (+2.3)
  • Harris leads in WI (+0.7), MI (+1.1)
  • Trump wins with PA/NC/GA/AZ
To be sure, Trumper's have to be uncomfortable with such slim margins (I know I am), but you'd rather have a positive slim margin than a negative slim margin. Especially went juxtaposed with past poll tendency to underrepresent Trump. Yes, pollsters have sworn they have corrected the errors of pervious polls. Yes, they could now be overestimating Trump support. Yes, that could all be crap and they've changed nothing because pollsters are arrogant elitist and think that their mostly old methods will prove correct this time.
 
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Anyone have updated data on PA mail-in ballot numbers by party affiliation? Everything I can find on this is old. 😞
 
One of the election betting sites (Kalshi) had Trump up 30% 48 hours ago. It has now dropped to up by 12%
 
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One of the election betting sites (Kalshi) had Trump up 30% 48 hours ago. It has now dropped to up by 12%
That's not one I track. Weird to have that much volatility though. Has to be a low money site. Some of these sites are in the billions, so hard to see a few bets driving them that wildly.
 
Only 100M in volume...can totally be driven by a big money bet or two. For comps, polymarket is at 2.9B in volume.
Polymarket also has Trump going down but that has happened before. I think some of this is a pump and dump scheme by some whale investors
 
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538 Updates:
  • Harris now only up 1.2% in national popular vote. Biden was +8.4% in 2020.
  • Trump leads in NV (+0.1), PA (+0.3), NC (+1.3), GA (+1.6) and AZ (+2.3)
  • Harris leads in WI (+0.7), MI (+1.1)
  • Trump wins with PA/NC/GA/AZ
I think there some garbage pollsters out there flooding the zone, especially AtlasIntel. Their methodology is suspect
 
Polymarket also has Trump going down but that has happened before. I think some of this is a pump and dump scheme by some whale investors
Trump is certainly trending downward as of 10/30.

Do you have any indication on what is preceding this? The Marist poll with Harris +2 in PA is the only "new" item out there that I know of...but there is also Atlas with Trump +1 and USA Today with a tie...all three having closed on 10/30.
 
Nate Silver uses them.
Nate Silver uses them because they got like one poll spot on in 2020. He has also recently said he thinks a bunch of pollsters are herding their numbers to make them mainly be tossups.
 
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Wasn't Atlas the closest pollster in 2020? Also rated a 2.7/3 by 538.
The problems with Atlas are 1) they're Brazilian 2) they are doing polls solely via Instagram 3) they did a large poll, didn't like the numbers (Harris +1 or +2) and immediately did another large poll. Veteran pollsters have said this is a very flawed approach that leads to lots of cut corners 4) their founder/owner says he didn't think the Harris +1 or 2 poll was accurate because of what he thought the EV data was. Again, he's brazilian 5) he moved *both* the presidential and gubernatorial races like 4-5 points to the right. There is absolutely 0 way Mark Robinson made a 4-5 point gain in a poll within 1-2 days 6) yeah the got 1 poll right in 2020; they've also messed up big time in their polls, like their French second round polls that had Le Pen up double digits
 
Trump is certainly trending downward as of 10/30.

Do you have any indication on what is preceding this? The Marist poll with Harris +2 in PA is the only "new" item out there that I know of...but there is also Atlas with Trump +1 and USA Today with a tie...all three having closed on 10/30.
I think people are using it as a scam and suckering pro Trump betters. It is a pump and dump scheme
 
Nate Silver uses them because they got like one poll spot on in 2020. He has also recently said he thinks a bunch of pollsters are herding their numbers to make them mainly be tossups.
They are a legit pollster. I am not sure how you can just call them suspect.
 
Trump is certainly trending downward as of 10/30.

Do you have any indication on what is preceding this? The Marist poll with Harris +2 in PA is the only "new" item out there that I know of...but there is also Atlas with Trump +1 and USA Today with a tie...all three having closed on 10/30.
For all intents and purposes this is a coin flip race. Trump is a slight favorite, but that means very little. There is not THAT much difference between 45-55. Most of these polls come with a margin of error of 3-5% so they really are statistically meaningless.

So, imo you will see the markets tighten towards 50-50 on Monday night and during the day Tuesday until a winner is declared.

In the end, you have to think it comes down to voter turnout and I just dont see voters turning out for Kamala. She has no personality. She is not smart. She has no real accomplishments. And she has a horrible cackling laugh. Plus, she is really stupid. I just don't see people going out of their way to vote for her.
 
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So even if you dump Atas from your calculus, you still have this:

pollster
date
sample
moe
Trump (R)
Harris (D)
spread
10/27 - 10/30​
500 LV​
4.4​
49​
49​
Tie​
10/27 - 10/30​
1738 LV​
2​
49​
48​
Trump+1​
10/27 - 10/30​
1400 LV​
3.1​
48​
50​
Harris+2​
10/24 - 10/28​
2186 LV​
2.1​
49​
47​
Trump+2​
CNN*
10/23 - 10/28​
819 LV​
4.7​
48​
48​
Tie​
10/22 - 10/28​
1273 LV​
3.9​
49​
49​
Tie​
10/21 - 10/22​
860 LV​
3.3​
49​
48​
Trump+1​
Ave​
48.7​
48.4​
Trump+0.3​

Still...crazy tight. I can't believe the betting markets have Trump as high as they do. I don't bet, but I certainly would not be betting on either one in this case.
 
Look at my response above for why I think they're suspect. I go off analysis I read from veteran/former pollsters who don't BS
I saw that after I posted. Your critique of them sounds legit...and right off the redit post I just read... 🤔
 
What do you mean?
Perhaps I should ask what do you mean? Are you saying betters are pushing the ML up just to drop it to induce Trump betters to buy the dip?

When they do that, they also create more favorable returns for a Harris vote and drive big money to her.

When there is so much volume out there on the big sites, I just don't see it as a winnable strategy. The volatility is simply a reflection of the uncertainty.
 
So even if you dump Atas from your calculus, you still have this:

pollster
date
sample
moe
Trump (R)
Harris (D)
spread
10/27 - 10/30​
500 LV​
4.4​
49​
49​
Tie​
10/27 - 10/30​
1738 LV​
2​
49​
48​
Trump+1​
10/27 - 10/30​
1400 LV​
3.1​
48​
50​
Harris+2​
10/24 - 10/28​
2186 LV​
2.1​
49​
47​
Trump+2​
CNN*
10/23 - 10/28​
819 LV​
4.7​
48​
48​
Tie​
10/22 - 10/28​
1273 LV​
3.9​
49​
49​
Tie​
10/21 - 10/22​
860 LV​
3.3​
49​
48​
Trump+1​
Ave​
48.7​
48.4​
Trump+0.3​

Still...crazy tight. I can't believe the betting markets have Trump as high as they do. I don't bet, but I certainly would not be betting on either one in this case.
I meant to take Atlas out of the table above.... doing so tightens to poll average by a tenth of a point.

Don't misread...I am not pumping this as a meaningful Trump lead. A 0.2 point lead against a 3.6 average MOE is the same as no lead at all.

In fact, any lead within the MOE is no lead at all.

If you are Harris, you are banking on a pollster over correction for past Trump underrepresentation.
If you are Trump, you are banking on continued pollster underrepresenting Trump.
 
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