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A recent poll shows Attorney General Marty Jackley leading the 2026 U.S. House primary race with 57% of Republican voter support.

A significant portion of voters, 36%, remain undecided in the race for the open congressional seat.

State Sen. Casey Crabtree and businessman James Bialota trail with 5% and 2% of support, respectively.

PIERRE, S.D. – If the 2026 primary election for U.S. House were held today, most South Dakota Republicans would support Attorney Gen. Marty Jackley, according to a scientific poll of registered GOP voters co-sponsored by South Dakota News Watch.

The statewide survey, co-sponsored by the Chiesman Center for Democracy at the University of South Dakota, showed Jackley with 57%. State Sen. Casey Crabtree was the preferred candidate with 5%, f

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