Potential running mates are flocking to the historic “hush money” trial of former President Donald Trump’s as his onetime lawyer Michael Cohen appears as the star witness against the presumptive Republican nominee to challenge President Joe Biden in November. Former Republican candidates Vivek Ramaswamy and Gov. Doug Burgum, as well as Rep. Byron Donalds, all showed up at the New York City courthouse on Tuesday, after Sens. J.D. Vance and Tim Scott, another former GOP candidate, attended on Monday. Speaking to reporters outside, Ramaswamy, a biotech entrepreneur and conservative author, called…