His longterm forecasts are still for Clinton. You could also forecast shop around and pick
TheUpshot - The New York Times which has Clinton at 68% and includes the convention bounce.
We'll have a better idea next week.
Also see,
Election Update: Clinton’s Lead Is As Safe As Kerry’s Was In 2004 | FiveThirtyEight
Polls become much more accurate after the conventions
[TABLE="class: viz full"]
[TR]
[TH="class: upper upper-text, colspan: 2"][/TH]
[TH="class: upper, colspan: 1"]POLLING AVERAGE
[/TH]
[/TR]
[TR]
[TH="class: no-parent text, colspan: 1"]YEAR[/TH]
[TH="class: number, colspan: 1"]HEADING INTO CONVENTIONS[/TH]
[TH="class: number, colspan: 1"]30 DAYS AFTER CONVENTIONS[/TH]
[TH="class: no-parent number, colspan: 1"]ACTUAL RESULT[/TH]
[/TR]
[TR]
[TD="class: text"]1972[/TD]
[TD="class: number"]Nixon +16.0[/TD]
[TD="class: number"]Nixon +29.7[/TD]
[TD="class: number"]Nixon +23.2[/TD]
[/TR]
[TR]
[TD="class: text"]1976[/TD]
[TD="class: number"]Carter +13.0[/TD]
[TD="class: number"]Carter +4.0[/TD]
[TD="class: number"]Carter +2.0[/TD]
[/TR]
[TR]
[TD="class: text"]1980[/TD]
[TD="class: number"]Reagan +6.0[/TD]
[TD="class: number"]Reagan +2.6[/TD]
[TD="class: number"]Reagan +9.7[/TD]
[/TR]
[TR]
[TD="class: text"]1984[/TD]
[TD="class: number"]Reagan +14.3[/TD]
[TD="class: number"]Reagan +16.8[/TD]
[TD="class: number"]Reagan +18.2[/TD]
[/TR]
[TR]
[TD="class: text"]1988[/TD]
[TD="class: number"]Dukakis +6.7[/TD]
[TD="class: number"]Bush +3.0[/TD]
[TD="class: number"]Bush +7.7[/TD]
[/TR]
[TR]
[TD="class: text"]1992[/TD]
[TD="class: number"]Bush +1.0[/TD]
[TD="class: number"]Clinton +11.7[/TD]
[TD="class: number"]Clinton +5.6[/TD]
[/TR]
[TR]
[TD="class: text"]1996[/TD]
[TD="class: number"]Clinton +16.8[/TD]
[TD="class: number"]Clinton +16.0[/TD]
[TD="class: number"]Clinton +8.5[/TD]
[/TR]
[TR]
[TD="class: text"]2000[/TD]
[TD="class: number"]Bush +4.3[/TD]
[TD="class: number"]Gore +2.0[/TD]
[TD="class: number"]Gore +0.5[/TD]
[/TR]
[TR]
[TD="class: text"]2004[/TD]
[TD="class: number"]Kerry +2.7[/TD]
[TD="class: number"]Bush +1.8[/TD]
[TD="class: number"]Bush +2.5[/TD]
[/TR]
[TR]
[TD="class: text"]2008[/TD]
[TD="class: number"]Obama +3.8[/TD]
[TD="class: number"]Obama +3.1[/TD]
[TD="class: number"]Obama +7.3[/TD]
[/TR]
[TR]
[TD="class: text"]2012[/TD]
[TD="class: number"]Obama +2.3[/TD]
[TD="class: number"]Obama +1.9[/TD]
[TD="class: number"]Obama +3.9[/TD]
[/TR]
[/TABLE]