Democrats’ messy internal politics are on full display as we enter the final stretch of primary season.

The marquee event is Michigan’s Democratic Senate primary. Over the weekend, Bernie Sanders and Alexandria Ocasio-Cortez campaigned across the state with Abdul El-Sayed. Haley Stevens, meanwhile, argued that Sanders was nowhere to be found when she was working with President Obama on the auto bailout, and enters the final weeks of the campaign with a 12-to-1 advantage in television spending.

In Maine, former state Senate president Troy Jackson became the presumptive Democratic nominee to replace Graham Platner on the Senate ballot. A longtime Sanders supporter, Jackson was widely seen as the clearest heir to the movement Platner built before leaving the race.

And on Tuesday, Arizona voters will decide a hotly contested Democratic primary in the 1st Congressional District, one of the most competitive House seats in the country.

On today’s episode, we break down all three contests. We also make sense of President Trump’s primetime address on election security and examine how the White House is trying to shape both the administration of the midterms and public confidence in the results.

Joining me are Mary Radcliffe, head of research at FiftyPlusOne, and Nathaniel Rakich, managing editor of Votebeat.

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