From a post last night on The New York Times' 538 blog on The Des Moines Register's endorsement yesterday of Republican presidential candidate Mitt Romney:
On average, across eight presidential races since 1988, the candidate receiving the endorsement of the Des Moines Register has outperformed the polls by a statistically insignificant 3-point margin. The four Republican candidates in the sample, meanwhile, have on average done slightly worse than polling would have projected, although the difference is nowhere close to being statistically significant.
On average, across eight presidential races since 1988, the candidate receiving the endorsement of the Des Moines Register has outperformed the polls by a statistically insignificant 3-point margin. The four Republican candidates in the sample, meanwhile, have on average done slightly worse than polling would have projected, although the difference is nowhere close to being statistically significant.
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