Former Michigan state Senate Majority Leader Mike Bishop (R) has won the primary to succeed retiring Rep. Mike Rogers (R-Mich.), giving the GOP establishment its preferred candidate to hold Rogers's seat.

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The Associated Press has called the race for Bishop, who led Michigan state Rep. Tom McMillin (R) 59 percent to 41 percent with 73 percent of precincts reporting.

The win gives Republicans their best chance to hold the Republican-leaning seat. Some GOP strategists had been concerned that McMillin, a Tea Party candidate who's a close ally of Rep. Justin AmashJustin AmashOvernight Defense: House votes to renew surveillance program | More drones, troops headed to Afghanistan | Former officers urge lawmakers to curb Trump's nuclear powers Overnight Tech: House votes to reauthorize surveillance powers | Twitter on defensive after Project Veritas video | Senate panel to hold hearing on bitcoin Overnight Cybersecurity: House votes to renew NSA spying | Trump tweets spark confusion | Signs Russian hackers are targeting Olympics | Bannon expected to appear before House Intel panel MORE (R-Mich.), could hurt their chances this fall in the Republican-leaning district. He'll face Ingham County Treasurer Eric Schertzing (D), who also won his primary.

Bishop will more likely than not be joined in Congress by Michigan state Sen. Joe Moolenaar (R), who won the primary for retiring Rep. Dave Camp's (R-Mich.) seat.

The Associated Press has called the race for Moolenaar, a conservative state senator, who led big-spending businessman and former state party treasurer Paul Mitchell (R) 51 percent to 38 percent with 74 percent of precincts reporting.

Moolenaar was outspent by more than $4 million but had Camp's backing as well as the support of former Sen. Rick Santorum (R-Pa.) and Sen. Mike LeeMichael (Mike) Shumway LeeNSA spying program overcomes key Senate hurdle With religious liberty memo, Trump made America free to be faithful again This week: Time running out for Congress to avoid shutdown MORE (R-Utah). He'll begin the election as the favorite this fall against Democrat Jeff Holmes in the Republican-leaning district.

—This post was updated at 12:20 p.m.