One Republican Presidential candidate has stated that any cuts to Social Security benefits are completely off the table and he happens to also be the current frontrunner for the nomination, Donald Trump.
The theory is not that Trump will win the election and be personally responsible for preserving Social Security. Instead the theory is that his position indicates a shift in the thinking of Republican voters.
It may now be true that voters for both political parties agree that Social Security benefits should not be reduced. If that is the case, then it remains to be seen if more politicians on both sides of the aisle agree with those voters.