House Democrats are one step closer to finally getting a successful Iran war powers vote as their last holdout plans to flip and at least one Republican says they may follow suit. Why it matters: While the vote would be largely symbolic — President Trump could veto the measure — Democrats believe it would be a crucial rebuke of the conflict. House Intelligence Committee ranking member Jim Himes (D-Conn.), one of the lawmakers leading the measure , told Axios he is "feeling pretty good" about its chances of passing on Thursday. Another senior House Democrat, asked if party leadership is confident about the vote, told Axios: "Yes." Driving the news: Rep. Jared Golden (D-Maine), the one Democrat who has consistently voted against Iran war powers resolutions, told Axios his "intention is to vote yes on it" on Thursday.…