In 2012 presidential race, PPP used only live phone interviews to predict the outcome.
In 2016, PPP is using 80% phone interview and 20% internet survey to predict the race.
The difference is noteworthy:
*Clinton won popular vote by 2.1% - PPP's internet survey was off by 16.9%, phone interview off by 3.9%.
*Trump won North Carolina by 3.7% - PPP was off 6.7%, their internet survey off by 28.7%.
*Trump won Florida by 1.2% - PPP was off by 5.2%, PPP's internet survey by 20.2%.
*Trump won Ohio by 8.1% - PPP was off by 9.1%, PPP's internet survey off by 32.1%.
*Trump won Pennsylvania by 0.7% - PPP was off by 6.7%, their internet survey off by 26.7%.
October 26
National
Phone: Clinton 46 - 40
Internet: Clinton 47 - 28
Outcome: Clinton 46 - 40
October 24
North Carolina
Phone: Trump 48 - 46
Internet: Clinton 53 - 28
Outcome: Clinton 47 - 44
October 14
Florida (4-way)
Phone: even 46 - 46%
Internet: Clinton 44 - 25%
Outcome: Clinton 46 - 42%
October 12
Nevada
Phone: Trump 47 - 44%
Internet: Clinton 58 - 27%
Outcome: Clinton 47 - 43%
October 6
Ohio (4-way)
Phone: Trump 48 - 43%
Internet: Clinton 47 - 23%
Outcome: Clinton 44 - 43%
September 29
National (4-way)
Phone: Trump 46 - 42%
Internet: Clinton 54 - 18%
Outcome: Clinton 44 - 40%
Virginia
Phone: Clinton 47 - 44%
Internet: Clinton 42 - 22%
Outcome: Clinton 46 - 40%
Pennsylvania
Phone: Clinton 45 - 43%
Internet: Clinton 47 - 21%
Outcome: Clinton 45 - 39%
Florida
Phone: Trump 48 - 44%
Internet: Clinton 47 - 25%
Outcome: Clinton 45 - 43%
Colorado
Phone: even at 44 - 44%
Internet: Clinton 56 - 28%
Outcome: Clinton 46 - 40%
September 21
North Carolina
Phone: Trump 49 - Clinton 44 - Johnson 4%
Internet: Clinton 35 - Trump 29 - Johnson 12%
Outcome: Trump 45 - Clinton 43 - Johnson 6%
September 12
Nevada
Phone: Trump 47 - 44%
Internet: Clinton 49 - 20%
Outcome: Clinton 45 - 42%
September 7
Florida
Phone: Trump 52 - Clinton 41%
Internet: Clinton 72 - Trump 22%
Outcome: Clinton 47 - Trump 46%
Phone: Trump 50 - Clinton 39 - Johnson 5%
Internet: Clinton 60 - Trump 18 - Johnson 6%
Outcome: Trump 44 - Clinton 43 - Johnson 5%
September 1
Missouri
Phone: Trump 51 - Clinton 40%
Internet: Clinton 46 - Trump 32%
Outcome: Trump 47 - Clinton 41%
North Carolina
Phone: Trump 48 - Clinton 45%
Internet: Clinton 44 - Trump 28%
Outcome: Clinton 45 - Trump 44%
Ohio
Phone: Clinton 46 - Trump 44%
Internet: Clinton 45 - Trump 34%
Outcome: Clinton 46 - Trump 42%
Pennsylvania
Phone: Clinton 47 - Trump 45%
Internet: Clinton 51 - Trump 36%
Outcome: Clinton 48 - Trump 43%
Arizona
Phone: Trump 49 - Clinton 43%
Internet: Clinton 46 - Trump 33%
Outcome: Trump 46 - Clinton 43%
New Hampshire
Phone: Clinton 46 - Trump 42%
Internet: Clinton 45 - Trump 32%
Outcome: Clinton 46 - Trump 40%
Wisconsin
Phone: Clinton 47 - Trump 45%
Internet: Clinton 51 - Trump 24%
Outcome: Clinton 48 - Trump 41%
August 30
National
Phone: Clinton 47 - 45%
Internet: Clinton 53 - 32%
Outcome: Clinton 48 - 43%
August 17
Missouri
Phone: Trump 48 - Clinton 43%
Internet: Clinton 40 - Trump 34%
Outcome: Trump 45 - Clinton 42%
August 16
Texas
Phone: Trump 56 - Clinton 39%
Internet: Clinton 65 - Trump 26%
Outcome: Trump 50 - Clinton 44%
Phone: Trump 50 - Clinton 36 - Johnson 6 - Stein 2%
Internet: Clinton 49 - Trump 20 - Johnson 2 - Stein 2%
Outcome: Trump 44 - Clinton 38 - Johnson 6 - Stein 2%
August 9
North Carolina
Phone: Trump 51 - Clinton 43%
Internet: Clinton 61 - Trump 24%
Outcome: Clinton 47 - Trump 46%
Phone: Trump 47 - Clinton 40 - Johnson 7 - Stein 2%
Internet: Clinton 52 - Trump 18 - Johnson 9 - Stein 1%
Outcome: Clinton 43 - Trump 41 - Johnson 7 - Stein 2%
August 1
Pennsylvania
Phone: Trump 52 - Clinton 44%
Internet: Clinton 71 - Trump 20%
Outcome: Clinton 49 - Trump 45%
Phone: Trump 48 - Clinton 42 - Johnson 4 - Stein 2%
Internet: Clinton 58 - Trump 16 - Johnson 2 - Stein 2%
Outcome: Clinton 45 - Trump 42 - Johnson 4 - Stein 2%
July 31
National
Phone: Trump 50 - Clinton 46%
Internet: Clinton 66 - Trump 23%
Outcome: Clinton 50 - Trump 45%
Phone: Trump 46 - Clinton 43 - Johnson 6 - Stein 1%
Internet: Clinton 58 - Trump 22 - Johnson 6 - Stein 5%
Outcome: Clinton 46 - Trump 41 - Johnson 6 - Stein 2%
July 25
Ohio
Phone: Trump 47 - Clinton 45%
Internet: Clinton 47 - Trump 35%
Outcome: Trump 45 - Clinton 45%
Phone: Trump 45 - Clinton 40 - Johnson 4 - Stein 1%
Internet: Clinton 37 - Trump 29 - Johnson 14 - Stein 7%
Outcome: Trump 42 - Clinton 39 - Johnson 6 - Stein 2%
July 15
Missouri
Phone: Trump 52 - Clinton 40%
Internet: Trump 42 - Clinton 40%
Outcome: Trump 50 - Clinton 40%
Phone: Trump 48 - Clinton 36 - Johnson 6 - Stein 2%
Internet: Trump 35 - Clinton 33 - Johnson 10 - Stein 1%
Outcome: Trump 46 - Clinton 36 - Johnson 7 - Stein 1%
June 30
National
Phone: Trump 50 - Clinton 44%
Internet: Clinton 65 - Trump 22%
Outcome: Clinton 48 - Trump 44%
Phone: Trump 47 - Clinton 41 - Johnson 5 - Stein 2%
Internet: Clinton 59 - Trump 20 - Johnson 6 - Stein 2%
Outcome: Clinton 45 - Trump 41 - Johnson 5 - Stein 2%
June 28
Arizona
Phone: Trump 46 - Clinton 38%
Internet: Clinton 48 - Trump 37%
Outcome: Trump 44 - Clinton 40%
Iowa
Phone: Trump 43 - Clinton 41%
Internet: Clinton 42 - Trump 24%
Outcome: Clinton 41 - Trump 39%
Pennsylvania
Phone: Trump 47 - Clinton 42%
Internet: Clinton 67 - Trump 24%
Outcome: Clinton 46 - Trump 42%
Wisconsin
Phone: Clinton 46 - Trump 42%
Internet: Clinton 50 - Trump 26%
Outcome: Clinton 47 - Trump 39%
June 23
North Carolina
Internet: Clinton 53 - Trump 33%
Outcome: Clinton 46 - Trump 42%
June 16
Virginia
Phone: Trump 44 - Clinton 41%
Internet: Clinton 48 - Trump 20%
Outcome: Clinton 42 - Trump 39%
June 8
Pennsylvania
Phone: Trump 47 - Clinton 42%
Internet: Clinton 52 - Trump 30%
Outcome: Clinton 44 - Trump 44%
June 7
Florida
Phone: Trump 49 - Clinton 42%
Internet: Clinton 53 - Trump 29%
Outcome: Trump 45 - Clinton 44%
June 1
Georgia
Phone: Trump 53 - Clinton 37%
Internet: Clinton 52 - Trump 31%
Outcome: Trump 49 - Clinton 40%
