Midterm warning signs for GOP in Arizona and Kansas

Rep. Kevin Yoder is defending his seat this cycle. Photo: Bill Clark/CQ Roll Call

Republican infighting in the race to replace retiring Sen. Jeff Flake in Arizona and heightened Democratic enthusiasm in Kansas both have the GOP worried ahead of November's midterm elections, per AP.

Why it matters: Republicans hold a razor-thin majority in the Senate, making the Arizona seat crucial to thwarting Democrats' efforts to retake the chamber. And with Democrats targeting 101 GOP-held districts, Republicans can't afford to lose what should be easy seats in Kansas, a state President Trump won by 21 points.