Morning Must-Read: Sam Wang: Senate Conditions Are Back To September 3

Sam Wang: Senate Conditions Are Back to September 3: “As of today, conditions in the battle for Senate control…

…are just about back to where they were on the day after the shake-up in the Kansas Senate race. Using polls alone in a 2-3 week window (see right sidebar), current medians show the following key margins: Alaska D+5%, Colorado D+2%, Iowa D+0.5%, North Carolina D+4%, and Kansas I+5.5%. In an election based on today’s polled sample, the most likely outcome is 51 votes for Democrats and Independents. [Update: see comments. At the moment, significant drivers of the difference between PEC and other sites appear to be (1) we’re using all polls, including partisan ones, which changes Alaska; and (2) we’re using Kansas two-candidate matchups and don’t have fundamentals to drag those polls in the GOP direction.]