Politics make strange bedfellows. The threats against careers, funding, primaries, loss of chairs and memberships did not deter the holdouts. Those threats came early in the voting, first day I believe. Trump endorsing McCarthy prevented the Dems from collaborating with the GOPe to support him. Trump knew the 20 holdouts would succeed and McCarthy would relent to demands, so Trump supported him because McCarthy would eventually become speaker after McCarthy's capitulation. Trump/MAGA had the GOPe in checkmate before the first vote. They knew what rules must be changed, chairs controlled to achieve what is needed within the House in the next two years. Once they had that, they allowed McCarthy to win the vote. (Gaetz & others voted "present").