NEW YORK (AP) — Democrats celebrating a successful effort to keep control of the U.S. Senate this year will soon confront a 2024 campaign that could prove more challenging. The Democratic Party enters the next cycle defending 23 Senate seats, including two held by independents who caucus with Democrats. That’s compared with just 10 Senate seats that Republicans hope to keep in their column. Several states that had costly and hotly contested Senate races this year will see a repeat in 2024. Those states include Nevada, Arizona, Pennsylvania and Wisconsin. Wisconsin, which saw Republican Sen. Ron Johnson narrowly win reelection this year, is also expected to have another competitive Senate race in two years. Democratic Sen. Tammy Baldwin is widely expected to seek a third term but has not officially announced. There are no official Republican candidates, but U.S. Rep. Mike Gallagher has been talked about as a possibility.