President Obama's approval rating dropped to 39 percent in the latest Gallup daily poll, his lowest mark in over two years.

The Gallup poll, which is based on a three-day rolling average, finds Obama at a 53 percent disapproval rating.

The numbers mark the first time Obama has been below the 40-percent threshold since mid-October of 2011, when he hit a low of 38 percent approval and 54 disapproval.

The poll’s findings come as the administration finds itself on the defensive amid a botched rollout of the president’s signature domestic achievement, Obamacare.

The website intended to enroll consumers in new insurance exchanges has been plagued with technical problems and millions are expected to be dropped from their current insurance plans as insurers adopt to the new law.

Critics have accused the president of misleading the public by repeatedly claiming that people could keep their insurance coverage if they liked it under Obamacare.

The White House has pushed back against the criticism, saying that Obama meant only that consumers could keep their coverage if it did not change because of the health care law. Officials say those dropped from coverage can find better plans for less through Obamacare.

The faulty website has also led the administration to admit that initial enrollment figures in Obamacare will be short of expectations, though they insist those numbers will grow nearer to the deadline for signing up.

Obama has vowed to quickly fix the website, with officials promising it will work “smoothly” by December. But the missteps have emboldened critics of Obamacare, who say that the website and dropped plans show that the entire law is unworkable.

The Gallup poll comes on the heels of another poll last week that also found Obama at a new low. The Wall Street Journal/NBC News poll found the president with a 42 percent approval and 51 disapproval split.

That poll attributed Obama’s slide to a number of controversies, including the Obamacare rollout, new leaks detailing the extent of the National Security Agency’s surveillance programs and the 16-day government shutdown.