Mike Johnson faces "growing number" of threats to his gavel

• Johnson's right flank is incensed at him reaching across the aisle to Democrats on government spending and foreign aid.
• Some are arguing that the House GOP needs a more uncompromising leader coming into the new Trump administration.

What they're saying: Rep. Ralph Norman (R-S.C.) told Axios that "a growing number of members" want "at minimum, assurances" from Johnson on "meaningful cuts" to spending before they vote to re-elect him.

• He joins roughly a dozen House Republicans who declined to commit to voting for Johnson even after Trump endorsed him on Monday.
• Rep. Lauren Boebert (R-Colo.) is the latest, with her office declining to comment on Tuesday when asked how she plans to vote.

By the numbers: Johnson is set to have a 219-215 majority when the House reconvenes on Jan. 3.

• Assuming full attendance from both sides, that means he will only be able to afford a single Republican voting for an alternative candidate.

• Rep. Thomas Massie (R-Ky.) has promised to be that Republican, meaning Johnson has virtually no room for additional defections from his side.

Yes, but: Johnson has been making calls over the holiday break, multiple sources familiar with the matter told Axios.

• One of the calls was with the "Five Families," a group of ideological factions within the House GOP, according to one House Republican.
• Some "commitments to the holdouts are on the table," the lawmaker told Axios, but "nothing formal" like changes to House rules.