The polls weren’t even close to predicting the final result, but in the end, Bruce Rauner won the Republican nomination for governor. He’ll face Pat Quinn on Nov. 4.

There are thousands of reasons that add up to any electoral victory. We can’t name them all, but we have identified these five as crucial to Rauner’s success.

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Bruce Rauner had a wild ride from unknown a year ago to victory in the Republican gubernatorial primary. Now it gets wilder.

Polls just days before the primary had Rauner ahead by nearly 20 points. His margin of victory was much smaller.

How do Bruce Rauner and Gov. Pat Quinn compare? Use our scorecard and find out for yourself.

Follow the governor’s race in cartoons in this gallery from Chicago Tribune cartoonist Scott Stantis.

NBC’s Chuck Todd looked at the Illinois governor’s race on his “Daily Rundown” Deep Dive Tuesday. See it here.