72 percent of Americans say Obamacare has been a dud.

That's according to a Bankrate.com report.

21 percent say the Affordable Care Act hasn't made much of an impact. 43 percent say it's had a negative impact on the country. Only 28 percent of Americans think Obamacare has had a positive impact.

Bankrate.com analysts say opposition to Obamacare increases with household income.

(Photo: Joe Raedle / 2014 Getty Images )