No argument here although the incumbents do seem to benefit from name recognition. Once you're in, you're in like flint. It takes an Act of Congress (queue the rim shot) to get the incumbents out of office.
THE PROBLEM ISN’T WHO SITS IN THE OVAL OFFICE FOR 4 - 8 YEARS; THE PROBLEM IS WHO IS IN CONGRESS OR THE SENATE FOR 30 - 40 YEARS. (we need term limits - 2 term max)