In the Democrat House Caucus before this critical vote was held, Minority Leader Nancy Pelosi (D-Calif.) warned the Democrats that they should expect "negative consequences" if they did not vote with their leadership on this bill. I assure every reader that Nancy Pelosi understands hardball politics, and retaliation for those who do not maintain loyalty to their leaders. That is not arm twisting .. that is a direct threat.
Also note, this didn't pass by one vote .. it passed by 5 votes
What actually happened is that after the yeses took the lead, several more flipped from no to yes.