All politicians wield some degree of “power” in terms of influencing public opinion, and consequentially, the decisions of elected officials.
Right now, the Dems are actually aligned with a large segment of the Israeli electorate that believes Netanyahu is slow-walking the negotiations to bring the remaining hostages home and agree to some cease fire to do so. I am doubtful any cease fire will be lasting, but its the only way to bring home at least a few of the living hostages. Between now and November, there will be almost unanimous agreement among the Dems to both express support for Israel to defend itself while increasingly expressing support for a cease fire.