Inspired by Sam Wang’s PEC post here, which was interesting but still left me unsatisfied.
In short what he did was to look at where the undecideds are and found that they are more concentrated in states that had gone to Romney.
Slightly longer version - at this point in 2012 about 10% were undecided and now about 15%. He graphed the states’ current margins against the Obama/Romney final margins and concluded that the a failure to “bring undecideds home” would hurt Trump more than it would hurt Clinton. That 5% increase in undecideds all going to Clinton would lead, he concludes, to a Clinton 381 EV, Trump 157 EV race, and all going to Trump would lead to a Trump 318 EV, Clinton 220 EV.
And yes ultimately it is individual state performances that matter. But …
It seems to me that his data in some way actually shows more upside for Trump than down: more of the undecideds’ “home” to return to is voting GOP. If both bring their portion of undecideds “home” Trump’s increase is more than is Clinton’s. Yes mostly that would means keeping Red states more Red , but it really does get granular depending on exactly who the undecideds are. The undecideds in PA, for example, are not necessarily voters whose “home” last time was Obama just because it off that margin.
Not much data out there on that that I can find.
The Reuters/Ipsos Polling Explorer has its limitations but an advantage of their technique is a large enough pooled n that they can offer us the ability to analyze by various filters.
Not much difference I can find on numbers of undecideds (two-way only) using different filters on the “likely voter” universe. Yes Voted Obama is 16% now undecided to Voted Romney now undecided being 22%. And “some college” or less about 22% compared to “college” or greater 19.5%. But by lean conservative to very vs lean liberal to very a bit more undecideds on the Liberal side, 20.6 to 18.4. Whites by age under 40 or 40 and over? About the same.
Nevertheless mostly consistent with the idea that current numbers (Clinton up about 5) include a fair number of likely voters who went Romney before now saying undecided and who might be able to be brought back.
So, demographically, who, do you think (data if you have it), are the various undecideds, and what do you think will make them decide how to vote (or if not to) if they don’t have enough to decide by now?