Polls at this time in 2016 had Hillary up by 9 and 10 points. This is a real problem for Uncle Joe as the new Fox poll has Trump and Biden both at 42 percent for November 2020.
Note----how Idiot Dems were all damp a month ago about the Fox Poll showing Biden with a 9 point lead--------Look at it now though----
Polls at this time in 2004 had Bush up Polls at this time in 2006 had Dems up Polls at this time in 2008 had Obama up Polls at this time in 2010 had republicans up Polls at this time in 2012 had Obama up Polls at this time in 2014 had republicans up Polls at this time in 2018 had Dems up
You are dealing with a very small sample size. Look at 80, 88 and 92. https://en.wikipedia.org/wiki/Historical_polling_for_United_States_presidential_elections