There is a very easy answer to that question. Republicans don't want a Republican President because there is no money to be had.
When President Clinton managed to get a Federal surplus on the books, Republicans were frothing at the mouth.
Republicans proved that they would do anything to profit from the taxes of working Americans. They lied and cheated to get Bush into the White House.
Republicans don't care whether children get a good public education. The only thing they care about is getting their hands on the education funds.
Republicans don't care whether the older Americans can survive on their Social Security income. The only thing they care about is getting their hands on the Social Security funds.
Republicans don't care whether older Americans get good health care via Medicare. The only thing they care about is privatizing Medicare and getting their hands on those tax dollars.
Republicans don't want the United States Postal Service to remain solvent. The only thing they see is a well run company with cash and assets and a proven record for making a profit ripe for plunder.
Republicans don't care how many wars America wages or how many Americans die or become disabled from those wars. The only thing they care about is that the American government continues to buy the guns, bombs, tanks, airplanes, ships...etc that Republicans make.
Republicans don't care how many Americans lose their jobs and thus their future and the future of their children due to outsourcing those jobs overseas. The only thing they care about is the cheap labor that's available and the profit that cheap labor is producing.
Republicans don't care that the Bush capital gains tax cuts and the Bush income tax cuts for the wealthy have caused millions of Americans to lose their homes, lose their jobs and lose their net worth. They don't care that these tax cuts have widened the income gap between the wealthy and middle class to levels never before seen. They don't care that those tax cuts combined with the mortgage and lending fraud committed by Banks and Wall Street have successfully transferred trillions of dollars of net worth out of the hands of the middle class into the hands of the already wealthy making an entirely new class of super rich in America. The only thing they care about is the money they made during the crisis.
Republicans don't want to win this years Presidential election because there isn't much more they can profit on until America recovers from their theft.
Republicans know they can't get their hands on the Social Security funds while this crisis is ongoing. At least not while Social Security remains sustaining and effective. There are two ways Republicans can destroy Social Security. The first way is they can try to reduce the amount of taxes that Americans contribute into Social Security, like agreeing to payroll tax cuts which will decrease Social Security's future solvency, fight every minimum wage increase bill they come across which would increase Social Security taxes collected, attack the salaries of public employees with lies suggesting public employees make too much money, and with every decrease in salary they achieve there is a corresponding decrease in Social Security taxes assessed or stagnate workers salaries and funnel a larger percent of a company's payroll into fewer and fewer hands thereby reducing the amount of Social Security paid due to the capitation that exists on Social Security Tax.
The second way Republicans can destroy Social Security is to reduce the total number of jobs available to Americans which would contribute to Social Security, like making excuses for banks that deny loans and investments to small businesses which would increase job creation, vote against any bill which would create American jobs like Obama's Jobs Bill, outsource jobs overseas thereby reducing the number of working Americans paying into Social Security or use the financial crisis as an excuse to lay off millions of private and public employees thereby reducing America's work force and reducing the amount of Social Security taxes assessed.
Republicans are sly and devious. They have not been able to destroy Social Security on their own but they have manipulated the American public into destroying Social Security themselves.
Republicans have themselves successfully eradicated private pensions replacing them with a 401K system which is controlled by Wall Street and will never again allow for a fair return on investment.
Republicans are now going after public pensions by praying on the fear and envy that private sector employees have from being manipulated and duped into trading their company pension plan for a retirement plan that has such limited investment choices and holds no one except you responsible or accountable for the choices being made.
Republicans have successfully transferred the recipient of the fear and hate that American workers are feeling away from themselves and onto public employees who still enjoy the benefit of a pension due to the fact they haven't been manipulated, cheated and robbed of their future by the Republican party middle men.
Republicans are parasites that feed and thrive off the misery and despair of the average person.
America needs to stop feeding Republicans.