Not surprisingly, Americans who identify with or lean toward the Democratic Party are highly likely to cite Obamacare as the president’s greatest achievement, while those who identify with or lean toward the GOP infrequently mention it, or anything else, as an achievement.

In addition to Obamacare, Democrats praise Obama for bring the troops home, fighting terrorism/capturing bin Laden, and stabilizing the economy.
Almost half of Republicans say “nothing” or can’t name anything they consider Obama’s greatest achievement so far. Republicans who do mention an achievement cite anti-terrorism efforts and capturing bin Laden, and bringing troops home. Five percent of Republicans mention Obamacare as his greatest achievement.