Trump declaring the Iran deal on 'life support' is a policy signal with an electoral price tag: higher oil means higher gas, and higher gas is historically the most direct economic pain voters assign to the party in the White House. With midterms approaching, Republicans own that pump number. The strategic read: any White House that torches a diplomatic off-ramp on Iran while presiding over rising energy costs is handing Democrats a kitchen-table argument — assuming Democrats are disciplined enough to use it.