DAVID MARCUS: MAGA voters trigger anti-incumbent earthquake, and it's little wonder why

This material may not be published, broadcast, rewritten, or redistributed. ©2026 FOX News Network, LLC. All rights reserved. Quotes displayed in real-time or delayed by at least 15 minutes. Market data provided by Factset. Powered and implemented by FactSet Digital Solutions. Legal Statement. Mutual Fund and ETF data provided by LSEG. Sen. Lindsey Graham said Sen. Bill Cassidy’s primary loss shows Republicans who oppose President Donald Trump or his agenda risk political fallout inside today’s GOP. Over the past several days, two Republican thorns in President Donald Trump’s side, in the form of Sen. Bill Cassidy, of Louisiana, and Rep. Thomas Massie, of Kentucky, have been ousted in their primaries by GOP voters and by very healthy margins. But this is about much more than Trump. All over the country, the animating issue for most Republican voters I talk to is rather simple. They say, "We gave the party the House, the Senate, and the White House, so why can’t popular legislation like the Save America Act, pass?" In other words, what is the point of electing Republicans if they won’t do anything? The carnage among incumbents thus far is severe and historic. It wasn’t just Cassidy