The president enjoyed a bump in popularity in January, with his approval rating rising to 43.5 percent, but the figure now stands at around 41.8 percent, according to poll tracker FiveThirtyEight.

The Biden administration has just entered its second year and in November the Democrats will face crucial midterm elections that will put the spotlight firmly on the president’s agenda.

Biden’s approval has been in negative territory since August 30, 2021—the day before the final withdrawal of U.S. troops from Afghanistan—with more Americans disapproving of the job he’s doing than approving.

Rasmussen Reports’ Biden Approval Index also recorded a slight improvement last month. It found that the president’s approval stood at 40 percent on January 3 and rose to 43 percent on January 6.

This high point didn’t last long, however, and Biden’s approval had dipped to 41 percent on January 7. It reached a monthly low of 38 percent on January 14. Biden’s approval stood at 39 percent as of February 2, according to Rasmussen Reports.

FiveThirtyEight tracks the president’s popularity by analyzing a wide variety of polls and through its own system of pollster ratings. In its analysis, Biden’s approval rating stood at 43.3 percent on New Year’s Day. The figure rose to 43.5 percent on January 3 before beginning to decline. The latest figure, for Wednesday, is 41.8 percent.

There are still more than two years until the next presidential election, but the pattern seen in the FiveThirtyEight and Rasmussen research could have a more immediate effect on Biden’s party. Republicans are hoping to retake the House of Representatives and the Senate in the midterm elections and criticism of the president’s record is likely to be a major feature of GOP campaigns.

The Biden administration is also facing the prospect of a battle to get its Supreme Court nominee confirmed after Senator Ben Ray Luján suffered a stroke. The New Mexico lawmaker is expected to make a full recovery, but it is not clear how long he will be absent from the Senate. Without Luján’s vote, Democrats do not have a majority in the chamber.

It is not known if any of the 50 Republicans senators will support Biden’s nominee to succeed Justice Stephen Breyer, who is retiring. The president has yet to name his nominee but an acrimonious confirmation process could further erode his popularity.

Newsweek has contacted the White House for comment.