CNN
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The Senate is slated to take a key vote Tuesday to take up government funding that is at risk of failing over a deal cut by West Virginia Sen. Joe Manchin that has come under sharp criticism from Republicans and liberals – pushback that could be enough to sink the vote and push Congress to the brink of a shutdown.

Lawmakers are still expected to pass a short-term funding extension by week’s end, averting a shutdown, but they will likely run right up against the deadline of Friday at midnight when funding expires.

The timing of the fight continues a pattern by Capitol Hill leaders in recent years of negotiating until the last minute to fund the federal government, leaving virtually no room for error in a series of events where any one senator could slow the process down beyond the deadline.

Neither party wants to be blamed for a shutdown – especially so close to the high-stakes November midterm elections where control of Congress is at stake and as Democrats and Republicans are both trying to make their case to voters that they should be in the majority. Many lawmakers are also eager to finish up work on Capitol Hill so they can return to their home states to campaign.

The Senate is on track for a vote Tuesday evening on whether to start debate on a measure to extend funding, but an effort to attach a permitting reform proposal from Manchin has put the vote in jeopardy.

Senators released the legislative text of the stop-gap funding bill overnight – a measure that would fund the government through December 16.

In addition to money to keep government agencies afloat, it provides around $12 billion for Ukraine as it continues to face Russian military attack, and would require the Pentagon to report on how US dollars have been spent there. The aid to Ukraine is a bipartisan priority.

The continuing resolution also would extend an expiring FDA user fee program for five years.

The permitting proposal would expedite the permitting and environmental review process for energy projects – including a major pipeline that would cross through Manchin’s home state of West Virginia. Senate Democratic leaders are pushing to pass it along with government funding as a result of a deal cut to secure Manchin’s support for Democrats’ controversial Inflation Reduction Act – a…