Republicans' internal divisions, and divisions with President Trump, made legislating nearly impossible during Trump's first term. There's little sign that thing would be different should he be re-elected. And Sen. Ed Markey, Democrat of Massachusetts, won his primary against Rep. Joe Kennedy III. Congressman Richard Neal, chairman of the House Ways and Means committee, also held-off a insurgent challenger. But the contests illustrate a new reality of Democratic politics: primary challenges are here to stay. This episode: campaign correspondent Asma Khalid, congressional reporter Kelsey Snell, and congressional editor Deirdre Walsh. Connect: Subscribe to the NPR Politics Podcast here. Email the show at [email protected]. Join the NPR Politics Podcast Facebook Group. Listen to our playlist The NPR Politics Daily Workout. Subscribe to the NPR Politics Newsletter. Find and support your local public radio station.