The president’s approval rating has been underwater since late August as the final U.S. forces withdrew from Afghanistan amid widespread criticism of his handling of the troop drawdown.

Since then, the administration has suffered mixed fortunes, passing a $1.2 trillion bipartisan infrastructure bill but so far failing to pass the separate $1.75 trillion Build Back Better Act.

A Fox Business poll conducted from December 11 to 14 showed Biden’s standing with voters had improved and his approval stood at 47 percent.

While his disapproval in that poll was 51 percent, those figures represented a notable change since a Fox Business poll in November found Biden’s disapproval was 54 percent and his approval was 44 percent.

The poll surveyed 1,002 registered voters and had a margin of error plus or minus three percentage points.

Poll tracker FiveThirtyEight tracks Biden’s approval rating based on a large number of polls and its own system of pollster ratings. The site rates the recent Fox Business poll “A”—its second-highest rating.

FiveThirtyEight’s own analysis also shows that Biden’s approval rating has made minor gains over the last month. On November 20, the president’s approval stood at 42.5 percent compared to 51.8 percent disapproval.

As of December 20, FiveThirtyEight gave Biden an average approval rating of 43.5 percent, while his disapproval stood at 51.9 percent. That’s a marginal improvement month-on-month but also represents a very recent decline as Biden enjoyed 43.9 percent approval on December 19 and just 50.5 percent disapproval.

Biden’s position in other major polls, including by YouGov and Ipsos, has remained largely static in December, while Morning Consult’s most recent survey of 1,998 registered voters from December 18 to 20 found Biden’s approval down three points to 43 percent compared to 46 percent between December 11 and 13.

The president’s disapproval had risen from 51 percent to 53 percent over the same period, according to Morning Consult polling, which enjoys a “B” rating from FiveThirtyEight.

Nonetheless, Biden has made apparently modest gains in his approval rating. It comes as his administration moves to tackle the spread of the Omicron variant of COVID-19, which is now the dominant strain of the virus in the U.S.

Omicron is believed to account for 73.2 percent of new U.S. COVID cases in the week ending December 18, while it accounted for just one percent of cases in the week ending December 4. The first U.S. death from the Omicron variant was confirmed in Harris County, Texas on Monday and was a reinfection.

The Biden administration announced early on Tuesday that the federal government would purchase half a billion COVID tests and set up a website to distribute the tests free to Americans who want them. This represents a reversal in policy following criticism of the White House’s apparent dismissal of providing free at-home tests.