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Forecasting the US 2020 elections | The Economist

  

Category:  News & Politics

Via:  jbb  •  4 years ago  •  41 comments

By:   The Economist

Forecasting the US 2020 elections | The Economist
Right now, our model thinks Joe Biden is very likely to beat Donald Trump in the electoral college

It is increasingly likely Biden wins in a landslide!


S E E D E D   C O N T E N T




The Economist is analysing polling, economic and demographic data to predict America's elections in 2020


Right now, our model thinks Joe Biden is very likely to beat Donald Trump in the electoral college.


Joe Biden Democrat Donald Trump Republican Chance of winning the electoral college around 9 in 10 or 91% around 1 in 10 or 8% Chance of winning the most votes better than 19 in 20 or 99% less than 1 in 20 or 1% Predicted range of electoral college votes
(270 to win) 249-415 123-289 The probability of an electoral-college tie is <1%

Chance of winning
the electoral college
Chance of winning
the most votes
Predicted range of electoral college votes (270 to win)
Joe Biden Democrat around 9 in 10 or 91% better than 19 in 20 or 99% 249-415
Donald Trump Republican around 1 in 10 or 8% less than 1 in 20 or 1% 123-289

The probability of an electoral-college tie is <1%

Estimated electoral college votes

Our model is updated every day and combines state and national polls with economic indicators to predict a range of outcomes. The midpoint is the estimate of the electoral-college vote for each party on election day.

Electoral-college simulations

Our model works by simulating 20,000 paths for the election, each time varying candidates' vote shares to account for polling error, changes in turnout or the political environment and the effects of campaigning. The bars below represent the predicted likelihood of every plausible electoral-vote outcome.

Chance of winning each state

Our model combines the national prediction with polls and political-economic factors at the state level. We take into account that states that are similar are likely to move with each other; if Donald Trump wins Minnesota, he will probably win Wisconsin too.

Modelled popular vote on each day

The model first averages the polls, weighting them by their sample sizes and correcting them for tendencies to overestimate support for one party. It then combines this average with our forecast based on non-polling data, pulling vote shares on each day slightly towards the final election-day projection.

Sources: US Census Bureau; MIT Election and Data Science Lab; 2016 Cooperative Congressional Election Study; US Bureau of Economic Analysis; American National Election Studies; 270towin.com; Gallup; FiveThirtyEight; YouGov

Forecast by The Economist with Andrew Gelman and Merlin Heidemanns, Columbia University

Download the source codeDownload the polling data

Checks and Balance

Follow The Economist's coverage of US politics by subscribing to our newsletter and podcast. Sign up for our newsletterListen to our podcast


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JBB
Professor Principal
1  seeder  JBB    4 years ago

Trump's chances for reelection are Slim and None...

 
 
 
Citizen Kane-473667
Professor Quiet
1.1  Citizen Kane-473667  replied to  JBB @1    4 years ago
 
 
 
JBB
Professor Principal
1.1.1  seeder  JBB  replied to  Citizen Kane-473667 @1.1    4 years ago

Yet, Trump only lost the popular vote by 2% in 2016. Biden is not Hillary Clinton and Trump is now down 10-15%. It's a whole new ballgame...

 
 
 
Citizen Kane-473667
Professor Quiet
1.1.3  Citizen Kane-473667  replied to  JBB @1.1.1    4 years ago

Yep, and that 8scwhyvwe havevthe EC, so the rest of the country isn't run by CA and NY.

 
 
 
Paula Bartholomew
Professor Participates
1.1.4  Paula Bartholomew  replied to  Citizen Kane-473667 @1.1.3    4 years ago
8scwhyvwe

the what?

 
 
 
Citizen Kane-473667
Professor Quiet
1.1.5  Citizen Kane-473667  replied to  Paula Bartholomew @1.1.4    4 years ago

Phone texting, lol! 

Should read "Yep, and that's why we have the EC, so the rest of the country isn't run by CA and NY"

 
 
 
Paula Bartholomew
Professor Participates
1.1.6  Paula Bartholomew  replied to  Citizen Kane-473667 @1.1.5    4 years ago

Oh okay lol.  Just how is my state running the rest of the country?

 
 
 
Citizen Kane-473667
Professor Quiet
1.1.7  Citizen Kane-473667  replied to  Paula Bartholomew @1.1.6    4 years ago

Because without the EC, the popular vote of those two states alone would overrule the rest of the country. Look at what happened in 2016. Trump won 30 other states popular vote. Under the Popular Vote plan, more than half of the States would have had their popular vote overturned by CA alone.

 
 
 
Ozzwald
Professor Quiet
1.1.8  Ozzwald  replied to  XDm9mm @1.1.2    4 years ago

Maybe you haven't learned yet, but the popularity contest "popular vote" does not directly elect the President.

And how do you feel about that?  Should the American election process ignore the will of the people, in your opinion?

 
 
 
Ozzwald
Professor Quiet
1.1.9  Ozzwald  replied to  Citizen Kane-473667 @1.1.7    4 years ago

Because without the EC, the popular vote of those two states alone would overrule the rest of the country. Look at what happened in 2016. Trump won 30 other states popular vote. Under the Popular Vote plan, more than half of the States would have had their popular vote overturned by CA alone.

By that theory, you are stating that citizens of less populated states, should have more voter rights than other citizens?  Or at least that their votes should count more than others?

Is that truly what you believe?  Some people's votes should count more than other people's?

 
 
 
Texan1211
Professor Principal
1.1.10  Texan1211  replied to  Ozzwald @1.1.8    4 years ago

Is there any particlular reason no Democrats even breathed ONE fucking word about the EC in 2008 or 2012?

 
 
 
JohnRussell
Professor Principal
1.1.11  JohnRussell  replied to  Ozzwald @1.1.8    4 years ago

We like our elections decided by states that have more cows than people. 

 
 
 
Texan1211
Professor Principal
1.1.12  Texan1211  replied to  JohnRussell @1.1.11    4 years ago

Thinking such as that cost your Abuela Hillary dearly in 2016, and caused you untold amounts of angst!

 
 
 
Ozzwald
Professor Quiet
1.1.13  Ozzwald  replied to  Texan1211 @1.1.10    4 years ago
Is there any particlular reason no Democrats even breathed ONE fucking word about the EC in 2008 or 2012?

Of course there is a reason, the electoral college did not overturn the will of the people in 2008 or 2012.  Duh!!!!!!!

Is there any particular reason no Republican had any problems with mail in ballots over the last 100 years?

 
 
 
Texan1211
Professor Principal
1.1.14  Texan1211  replied to  Ozzwald @1.1.13    4 years ago

the EC did what it ALWAYS does, vote accordingly as their states voted.

the will of the people by state was honored.

 
 
 
Ozzwald
Professor Quiet
1.1.15  Ozzwald  replied to  Texan1211 @1.1.14    4 years ago

the EC did what it ALWAYS does, vote accordingly as their states voted.

the will of the people by state was honored.

Once again Texan you show a complete lack of understanding.  Most likely due to your highly partisan core beliefs and lack of empathy.

 
 
 
Texan1211
Professor Principal
1.1.16  Texan1211  replied to  Ozzwald @1.1.15    4 years ago

I understand it is pointless to whine about the electoral college because your Abuela Hillary lost.

Petulant children whine.

 
 
 
Ozzwald
Professor Quiet
1.1.17  Ozzwald  replied to  Texan1211 @1.1.16    4 years ago
I understand it is pointless to whine about the electoral college because your Abuela Hillary lost.

Once again you completely ignore the conversation and try to detour it to one of your favorite talking points.  Otherwise, show me where I mentioned Hillary's name.

 
 
 
Texan1211
Professor Principal
1.1.18  Texan1211  replied to  Ozzwald @1.1.17    4 years ago

sorry, but she is the one who caused you all the grief over the ec.

sooner or later people just have to come to terms with it

 
 
 
Citizen Kane-473667
Professor Quiet
1.1.19  Citizen Kane-473667  replied to  Ozzwald @1.1.9    4 years ago
By that theory, you are stating that citizens of less populated states, should have more voter rights than other citizens? 

That is one way of looking at it. Pretty narrow minded view, but still a view!

Or at least that their votes should count more than others?

Yes, the voters of Nebraska should decide who their State votes for in the Presidential election, not the voters of California. Look at the issues that are foremost in each State for a better understanding of Why each State should have an equal voice in deciding who leads the country. According to your plan, the State with the largest population should have the biggest voice in deciding Who is in charge. Personally, I don't really want Hollyweird perverts pouring their money into campaigns to drown out the competition and then allowing them to decide Who will be in charge. President Weinstein anyone????

 
 
 
Account Deleted
Freshman Silent
3  Account Deleted    4 years ago

It's tough to do the level of polling needed to catch the fractional percentages that gained trump the electoral votes to win the presidency.

Typical polls of 1,100 or so simply cannot  predict to .002.  9,000 would get you to about a +-  .01  or 1% error level. So when polls bounce around about 3-4 points - consider it a tie. Consistent spreads greater than that - probably not.

Trump won Florida by .012, Michigan by .002, Pennsylvania by .007, and Wisconsin by .008 to get  75 electoral votes. Total votes - maybe 80,000 or so.

Polls just before the election showed Clinton ahead in the popular poll by 3.3 points. She actually won by 2.1 points.

 
 
 
FLYNAVY1
Professor Participates
3.1  FLYNAVY1  replied to  Account Deleted @3    4 years ago

Just get people out to vote..... run up the score, leave no doubt that the nation has rejected Trump.

 
 
 
cjcold
Professor Quiet
3.1.1  cjcold  replied to  FLYNAVY1 @3.1    4 years ago

The problem in 2016 was that dems thought it was a done deal and neglected to vote.

Hopefully they will ignore the lopsided polls and get out the vote this time. 

 
 

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