Democratic senators such as Heidi Heitkamp of North Dakota, Bob Casey of Pennsylvania and Jon Tester of Montana — who hail from states President Donald Trump won in 2016 — know they’re already facing stiff reelection challenges.
Now they’re concerned the Trump administration is dragging its feet on thwarting sophisticated Russian cyber operations that could have significant impact on their races — and could even sway which party wins control of the Senate. The red- and purple-state Democratic seats are top targets for Republicans hoping to expand their two-seat majority in the Senate; Democrats likely would have to hold all of them if they are to have any hope of retaking the chamber.