The Hill reports:

Two-thirds of likely voters say President Obama has kept his 2008 campaign promise to change America — but it’s changed for the worse, according to a sizable majority.
A new poll for The Hill found 56 percent of likely voters believe Obama’s first term has transformed the nation in a negative way, compared to 35 percent who believe the country has changed for the better under his leadership.
…
Strikingly, 1-in-5 Democrats say they feel Obama has changed the United States for the worse.

This is the kind of sentiment that the Romney campaign needs to more effectively tap into.