Every political strategist working the fall elections sees a game changer coming by the end of the month.

That's when the Supreme Court rules on the constitutionality of President Obama's signature legislative accomplishment, the Affordable Care Act (also known as "ObamaCare").

The Democrats have a nuclear option in this political game if the high court throws out the health care law as unconstitutional.

That blowup-the-system button, not pushed since FDR's attempt to stack the court with Democrats during the New Deal, is for Obama to use the bully pulpit of the White House, and the national stage of a presidential campaign, to launch a bitter attack on the current court as a corrupt tool of the Republican right wing.

It is a move that could energize Democrats and independents even as Republicans celebrate a major legal victory.

Some Democrats, sensing a political windfall, can't wait to start the offensive.