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Fig. 2 | Journal of Big Data

Fig. 2

From: Why polls fail to predict elections

Fig. 2

a Elypsis polls demographic distribution of respondents to survey conducted before the primaries (PASO) by age and gender. b Elypsis polling results before PASO separated by age and gender (Macri=red, Fernández= blue, Others=grey). Results are highly biased to people older than 50 as compared with the Census distribution in panel c. c Argentina Census Bureau 2010 demographic distribution by age and gender used to compare the demographics of the polls and the Twitter sample

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