What to know about today's primaries in Georgia, Kentucky, Pennsylvania and more

Key Points:

• Key primaries are taking place Tuesday in battleground states Georgia and Pennsylvania, as well as in Kentucky, Alabama, and Idaho, with significant implications for upcoming general elections.
• In Kentucky's 4th District, GOP Rep. Thomas Massie faces a well-funded challenge from Ed Gallrein, backed by Trump and pro-Israel groups, making it the most expensive House primary in history; Massie is resisting Trump's push for total loyalty.
• Georgia's open governor's race features heavy spending and Trump-backed candidates, including Lt. Gov. Burt Jones, while the GOP Senate primary is fragmented, potentially benefiting incumbent Democrat Jon Ossoff.
• Pennsylvania Democrats are targeting multiple House districts to gain seats, with Governor Josh Shapiro endorsing key candidates; success could boost Shapiro's political influence ahead of 2028.
• Alabama's House races are split between primaries Tuesday and a special election in August due to new congressional maps; GOP Sen. Tommy Tuberville is running for governor amid contested primaries, while Idaho holds gubernatorial and congressional primaries.