As of 3 p.m. today, the Republican majority in the U.S. House of Representatives and House Speaker Mike Johnson were discussing a plan to keep the federal government open and funded and fend off a shutdown.

To avoid suspension of some government services and the furlough of nonessential federal workers by the deadline of midnight tonight, lawmakers are considering legislation to fund the government into next year, disaster aid and economic relief for farmers, according to the New York Times. Johnson and House Republicans are moving forward with a new plan that the House has pledged to vote on today.

This is the House GOP’s fourth attempt to pass a bill to keep the government funded. The first bipartisan plan was agreed to by House Democrats but foiled by pressure from President-elect Donald Trump ally Elon Musk, who wanted the bill scrapped, CBS News reports. A second plan endorsed by Trump was voted down by Democrats and some Republicans. A third voted failed earlier today.

While essential services like air traffic control, the U.S. Postal Service and Social Security and Medicare payments would continue, a government shutdown would cause some federal agencies to close, and a prolonged shutdown could cause delays at U.S. airports during a busy holiday travel season.

Here is what you need to know as a potential shutdown looms:

• CBS News: A government shutdown could occur on Dec. 21. Here’s what services and payments could be impacted
• Forbes: Looming government shutdown: Here’s how air travel and more would be affected
• Associated Press: Closures, Social Security checks, furloughs: What a government shutdown might mean