A hashtag linking a potential government shutdown to President TrumpDonald John TrumpTrump's top adviser on Asia to serve as deputy national security adviser United Auto Workers strike against GM poised to head into eighth day Trump doubles down on call to investigate Biden after whistleblower complaint: 'That's the real story' MORE became the top trending topic on Twitter on Friday night.

\#TrumpShutdown, a hashtag used by Democrats ahead of Friday night’s deadline for Congress to pass a government spending bill, shot to the top of Twitter’s “Worldwide” trending topics.

The popularity of the hashtag may point to the difficulties Republicans and Trump will have in the fight over who is to blame for the shutdown.

Republicans argue it is Senate Democrats who are to blame because they blocked a House GOP bill that would have kept the government open for another months.

Democrats say the GOP and Trump are to blame, pointing to their control of the White House and Congress. 

Several top Democrats, including House Minority Leader Nancy PelosiNancy PelosiRomney: Trump asking Ukraine to investigate political rival 'would be troubling in the extreme' Pelosi: Whistleblower complaint 'must be addressed immediately' Democrats must embrace Israel and denounce anti-Semitism in the party MORE (D-Calif.) used the hashtag to tweet about the funding fight.

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Meanwhile, GOP lawmakers began employing the hashtag #SchumerShutdown during the shutdown debate starting Thursday night, blaming a potential shutdown on Senate Minority Leader Charles SchumerCharles (Chuck) Ellis SchumerToomey on gun reform: 'Beto O'Rourke is not helping' Schumer, Pelosi push Trump to back universal background check bill Sinema says she would back Kennedy in race against Markey MORE (D-N.Y.). 

The Senate rejected a House-passed funding bill late Friday night, and negotiations are ongoing to avoid a government shutdown at midnight.