From the Wall Street Journal:
If the current polls hold, Barack Obama will win the White House on November 4 and Democrats will consolidate their Congressional majorities, probably with a filibuster-proof Senate or very close to it. Without the ability to filibuster, the Senate would become like the House, able to pass whatever the majority wants.
Though we doubt most Americans realize it, this would be one of the most profound political and ideological shifts in U.S. history. Liberals would dominate the entire government in a way they haven't since 1965, or 1933.
The article goes on to cite some examples of bills that would have passed had it not been for the Senate minority stopping them. The author then concludes with this:
In both 1933 and 1965, liberal majorities imposed vast expansions of government that have never been repealed, and the current financial panic may give today's left another pretext to return to those heydays of welfare-state liberalism. Americans voting for "change" should know they may get far more than they ever imagined.