JACKSON, Miss. (AP) — Mississippi Gov. Phil Bryant is preparing to fill an upcoming vacancy in the U.S. Senate, and three state Republican sources told The Associated Press that he will choose the state agriculture commissioner who helped advise Donald Trump's presidential campaign in 2016.

Bryant, a supporter of President Trump, plans to appear Wednesday in the south Mississippi city of Brookhaven to announce a temporary successor for longtime Sen. Thad Cochran. The 80-year-old veteran senator is retiring April 1 because of poor health.

Brookhaven is the hometown of Cindy Hyde-Smith, a Republ...