David Mark @DavidMarkDC
Sen. Kyrsten Sinema (I-AZ)'s habit of rankling Democratic colleagues goes back to the House. In 2014, KS, representing a swing Maricopa County district, eyed a reliably blue Phoenix-area seat, which her now arch-rival, Rep. Ruben Gallego (D-AZ) later won. https://t.co/PpcrqgEn99 — PolitiTweet.org