Matt Grossmann

@mattgrossmann.bsky.social

Michigan State political scientist & IPPSR Director; Hooked bookstore/cafe Co-owner; Science of Politics Podcast; New book: Polarized by Degrees

Multi-candidate dynamics matter a lot in factional battles. Just compare MI-7 to MI-11 to MI-13. & the available candidates matter. Benson dominated governor primary by pushing one opponent to another race & another to a failed Indy bid. Thus a normy Dem won Abdul & Haley voters.

Mike Rogers will now get lots of national Republican support. They will think he can win & not believe any polls showing large Dem leads. Like McCormick in PA 24, but this time they will assume they have much better messages.

Bad night for Elissa Slotkin. She endorsed the 3rd place candidate in her prior district, helping her least preferred candidate. She didn't endorse (or recruit) in the Senate race. She may now get less attention than MI's other senator & loses stature as a Midwest savant.

Empathetic traits & values drive Democrats to accept compromise, whereas competitive traits & values drive Republicans to reject it. These views filter up from voters to Members of Congress (according to a new book): academic.oup.com/book/62261?l...

Dealmakers: The Psychology of Legislative Compromise

Abstract. Compromise is critical to democratic policymaking, but it can be hard to find on Capitol Hill. In this era of routine legislative gridlock, howev

academic.oup.com

It was great to see PolMeth hosted at MSU & A useful sign of what AI enables, such as 1) ideological coding of every presidential policy announcement ever, 2) collecting every interest group endorsement across elections, & 3) coding ideological direction of all state legislation

My district (MI-7) may be 1st toss-up district primary win for a Bernie candidate. Will Lawrence is only local option & will be with Bernie, AOC, & Abdul Sun. Slotkin just endorsed Maasdam, but he's been in 3rd place in fundraising & polling, well behind Brink; may help Lawrence.

Michigan reached agreement on a state budget. Republicans wanted spending cuts & Democrats did not so the agreement was to estimate that federal support will decline even though it should not. Headlines get to tout spending cuts unlikely to materialize.

Given majorities of Dems & Reps in House & Senate support similar bills to require age verification & regulate social media, bill may pass eventually. But long history of industry & civil liberties groups exploiting chamber differences, delays, & legal threats to block regulation

What leftist vs leadership policy conflicts would come up in 2027 Congress? They will be mostly united against Trump (including war funding) & unable to pass many non-messaging bills anyway. They already tried 2 gov shutdowns to no effect. But will be incentives to differentiate.

Dem odds to win Senate control have declined in prediction markets (with Republicans now favored) even as House control & generic ballot are high & stable, reflecting perceived candidate weaknesses reinforced by named candidate polls.