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Illinois candidates for U.S. Senate Democrat Tammy Duckworth and Republican incumbent Mark Kirk won their respective primaries.

Democratic U.S. Rep. Tammy Duckworth and Republican Sen. Mark Kirk have each won their primaries, setting up possibly one of the most expensive and potentially contentious races for U.S. Senate in November.

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Andrea Zopp, left, and Napoleon Harris.

We meet two of the Democratic candidates vying to be the nominee for U.S. Senator.