Democrats 'fear' this possible Trump VP pick who 'could spell the end for Biden': Insiders

Editor's note: This is the fifth in a series of profiles of potential running mates for presidential candidate Donald Trump on the 2024 Republican Party ticket

The race to determine who will be Donald Trump's running mate this November took a major step forward last week with the acceleration of vetting multiple potential candidates, but political insiders with deep knowledge of presidential campaigns say there is one possible name on the former president's shortlist Democrats "fear" the most.

Trump's campaign recently entered the next phase of the running mate search by requesting documents from several prospective contenders, including Florida Sen. Marco Rubio, who has grown to be a staunch ally of the former president since running against him in the 2016 Republican presidential primaries.

"Rubio is a familiar face who has become one of the strongest voices in the Senate for the America First agenda, is excellent on TV, and can blast Biden effectively for his failed policies," one top GOP strategist told Fox News Digital.