Mr. Gallego officially announced his candidacy Monday, saying in a campaign ad that those who are not rich and powerful need a new senator representing them.
Senate Democrats struggle with Kyrsten Sinema reelection dilemma
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I will be challenging Kyrsten Sinema for the United States Senate, and I need all of your support,” Mr. Gallego, 43, told a group of veterans in the ad.
Rep. Ruben Gallego announces bid for Kyrsten Sinema's Senate seat in Arizona
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