Biden, did a little better than Bernie his support fell by 4% from 34% in June 2019 to 30% in July 2019. If Biden’s support falls by 4% each month between July and the 3 February 2019 Iowa caucus, the former vice president will have a 6% level of support. To clarify, if you multiply 4% by six, the number of months until the Iowa Caucus you get 24%. Thus, Biden needs to do something and fast, or he’s toast.