The consensus seems to be that the votes aren’t there yet, which should be concerning for the White House, since the president has demonstrated no ability to move the public or Congress on anything. It’s hard to see how there will be any political downside to voting “no.” I’m guessing the White House assumes it will have a backstop among House Democrats who, even if they aren’t enthusiastic about a strike, will not want to drive another nail in the coffin of Obama’s presidency by assisting in his abject humiliation.