The race to determine who will be Donald Trump's running mate this November is continuing to heat up, with the former president telling Fox News last week he has "sort of a pretty good idea" who he'll select.
The identity of that person remains a mystery, but a number of prospective contenders were recently asked to provide documents to Trump's team as part of the vetting process, including firebrand Ohio Sen. J.D. Vance, who some insiders say could be the key to flipping working-class Democrat voters in a number of consequential battleground states.
"J.D. Vance has become a fixture on the road for Donald Trump and is extremely popular with the Trump base," one top GOP strategist told Fox News Digital, referencing Vance's frequent appearances with Trump on the campaign trail and beyond.
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