Republican Kevin McCarthy is struggling to secure enough support to ensure he wins a vote to become the new Speaker of the House of Representatives.
The Californian congressman must win a majority vote in the House on Tuesday to get the role.
But a group of Republicans are refusing to back him, despite him making a number of last-minute concessions.
Mr McCarthy cannot afford to lose more than a handful of votes from his party if he is to win the vote.
Read more at BBC.com