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.) will have the support of nearly all of the Kentucky GOP delegation, as he launches his bid for the White House.

Kentucky GOP Reps. Thomas Massie, Andy Barr Andy BarrMcConnell holds 12-point lead over Democratic challenger McGrath: poll Democrats fear 2016 repeat despite Biden's lead in polls Protecting COVID research at American universities from foreign hackers MORE and Brett Guthrie Steven (Brett) Brett GuthrieIgnore the misinformation: The FDA will ensure the safety of any COVID-19 vaccine House Republicans introduce legislation to give states 0 million for elections Hillicon Valley: Tech giants poised to weather coronavirus damage | Record Facebook-FTC deal approved | Bipartisan 5G bill introduced MORE told The Hill on Monday they will back Paul's presidential run and will be on hand for his Tuesday announcement in Louisville.

A representative for Rep. Ed Whitfield Wayne (Ed) Edward WhitfieldBottom Line Why Republicans took aim at an ethics watchdog What Azerbaijan wants from Israel? MORE (R-Ky.) responded to a question about whether he would endorse Paul in 2016 by saying he would be at the launch event on Tuesday.

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Rep. Hal Rogers (R-Ky.) has a policy of not getting involved in primaries, but a representative said he wishes Paul well and will support whoever the eventual GOP nominee is.

In December, Sen. Mitch McConnell Addison (Mitch) Mitchell McConnellMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (R-Ky.) said he would “almost certainly” back Paul should he seek the White House, although it’s yet to be seen how active the Senate majority leader will be on the campaign trail.

“I'm going to be helpful to him in any way I can be,” McConnell said at the time. “But I'm not going to be tromping around in New Hampshire and Iowa. I can tell you that.”

Paul provided crucial support to McConnell's 2014 reelection as he faced a Tea Party challenger.

With the majority of Kentucky Republicans in his pocket, Paul will be looking for support on Capitol Hill from those outside of his home state, and particularly in early voting states.

National Journal reported on Monday that Reps. Justin Amash Justin AmashOn The Trail: How Nancy Pelosi could improbably become president History is on Edward Snowden's side: Now it's time to give him a full pardon Trump says he's considering Snowden pardon MORE (R-Mich.), Raúl Labrador (R-Idaho) and Mark Sanford (R-S.C.) will support Paul and will appear with him at rallies later this week.

Paul is expected to announce his bid for the White House on Tuesday in Kentucky and will follow that up with trips to New Hampshire, South Carolina, Iowa and Nevada.

— This story was updated at 8:36 a.m.