A new poll from Public Policy Polling gives Clinton a 5 point lead, poll was taken between the 29th-30th July, just after the DNC.
PPP
Clinton 46
Trump 41
Johnson 6
Stein 2
PPP W/O Johnson or Stein
Clinton 50
Trump 45
Clinton Image Improves Following Conventions; Leads Trump by 5 - Public Policy Polling
Beginning to look more and more unlikely either Johnson or Stein are going to poll significantly well enough to get into the debates, they both appear to be on a downward trend. I suspect neither will get above 5 points come election day.