Few could match the bipartisan support that Ms. Parton received in public opinion polls. Not even Taylor Swift.

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While the president remains the most dominant figure in the world, other leaders and institutions are pushing back more vigorously than at the beginning of his second term.

© Kenny Holston/The New York Times

Pennsylvania Republicans now view John Fetterman, the state’s Democratic senator, more favorably than its sitting G.O.P. senator, a New York Times/Philadelphia Inquirer/Siena poll found.

© Edison Wu/The New York Times

A New York Times/Philadelphia Inquirer/Siena poll found Gov. Josh Shapiro leading Stacy Garrity and having support in the state for a possible presidential bid.

© Rachel Wisniewski for The New York Times; Hannah Beier/Reuters