An incumbent president’s political party tends to lose ground in Congress and on the state level during their tenure. And President Obama’s is no exception, losing the most ground. Below, a look at how presidents’ tenures have affected their own parties’ fates over the course of their time in the Oval Office.

University of Virginia professor Larry J. Sabato and his team at its Center for Politics analyzed House, Senate and state-level political positions under two-term presidents. (One-term presidents don’t have as much of a track record to compare.) The center’s findings highlight Ronald Reagan having the best record, while still experiencing losses, and Obama having the worst thus far. Some presidents have been able to recover a portion of their losses, however.In the early 1950s, President Harry S. Truman inherited President Franklin D. Roosevelt’s nearly evenly divided House of Representatives. The Democratic Party lost 12.8 percent of its House standing before his reelection. He was able to gain back just over ten percent before he left office.