CHRONICLE: Rauner’s primary performance weakest by an Illinois GOP governor in 90 years

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Governor Bruce Rauner had the weakest primary showing of any incumbent Illinois Republican governor since 1928, according to a study by Dr. Eric Ostermeier.

Ostermeier, with the Center for the Study of Politics and Governance at the Humphrey School of Public Affairs at the University of Minnesota said Rauner’s 51.38 percent vote share and 2.76-point win are the weakest showing since Governor Len Small lost by 26 points in 1928.

Rauner beat his primary opponent, State Rep. Jeanne Ives, by just 3 points. “No elected governor from either party in the Prairie State has survived a narrower primary victory since the first such contest in 1908,” wrote Ostermeier.

Before Rauner’s primary, incumbent governors who won their primaries did so with an average margin of victory of 52.6 points.

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