Thomas Massie is currently locked in a record-breaking primary battle against Ed Gallrein for the Kentucky fourth district seat.Donald Trump has aggressively supported the candidacy of Ed Gallrein while spending heavily to unseat the incumbent Republican.The race intensified after Thomas Massie challenged the foreign policy agenda and federal spending priorities of the party leadership.Polls suggest the election remains a dead heat as both candidates finalize their campaigns in one of the most costly primaries.