U.S. Rep. Doug Collins (left) and U.S. Sen. Kelly Loeffler are the two most high-profile of the 21 candidates running in the 'jungle' primary for Loeffler's Senate seat.
U.S. Sen. Kelly Loeffler finally accepted an invitation to debate in the race for the final two years of the Senate term she took over for the resigning Johnny Isakson, but it was not the debate…