Sen. Rand Paul Randal (Rand) Howard PaulSecond GOP senator to quarantine after exposure to coronavirus GOP senator to quarantine after coronavirus exposure The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill MORE (R-Ky.) is teasing a "major endorsement announcement" that he plans to give on Friday, April 1.

The announcement is going to be YUGE. Don't miss it... — Dr. Rand Paul (@RandPaul) March 31, 2016

Paul has maintained that he won't endorse during the primary season after dropping out of the bitter GOP race on Feb. 3.

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A spokesman told The Hill on Wednesday that Paul still planned to wait until after the primary season to endorse, despite a narrowing Republican field.

The Hill has reached out for comment on the pending endorsement announcement.

Paul ended his campaign amid lagging support after a poor showing in the Iowa caucuses in early February. The race his since seen a renewed focus on terrorism and more hawkish foreign policy debate.

—Jordain Carney contributed