Wisconsin Republican Rep. Sean Duffy will not challenge Democratic Sen. Tammy Baldwin in 2018, leaving the GOP without a top-tier candidate at this point as they try to prove that President Trump’s Wisconsin victory was no fluke and that the Dairy State is now firmly in their column.

The rising star, who just won a fourth term in November, would have cleared the primary field. Now that he has passed, numerous state lawmakers and prominent businessmen will likely announce their candidacies.