Sen. Marco RubioMarco Antonio RubioTrump replaces McMaster with Bolton as national security adviser Orlando March for Our Lives protesters to march to Rubio's downtown office, Pulse nightclub Lawmakers eye crackdown on China’s Confucius Institutes MORE (R-Fla.) is hosting a fundraiser for Rep. Tom CottonThomas (Tom) Bryant CottonOvernight Health Care: House passes .3T omnibus | Bill boosts funds for NIH, opioid treatment | Senators spar over ObamaCare fix | 'Right to Try' bill heads to the Senate Overnight Regulation: Omnibus includes deal on tip-pooling rule | Groups sue over rules for organic livestock | AT&T, DOJ make opening arguments in merger trial GOP senators push tougher sentencing for synthetic opioid MORE's (R-Ark.) Senate campaign in Miami, the latest help Rubio has provided to Cotton's campaign.

The senator will host a breakfast for Cotton at a popular Cuban restaurant in Miami on Monday, with the minimum contribution suggested at $500.

Rubio's leadership PAC is already spending heavily to help Cotton in his race against Sen. Mark Pryor (D-Ark.), airing ads touting Cotton's military background. The ads are the first major effort to help a 2014 candidate from the group.

The Miami Herald first reported the fundraiser.