The Iran nuclear deal is becoming an early campaign point in the battle for Senate control in 2016. Photo: WikiCommons.

The nuclear agreement with Iran is becoming an early campaign flash point in the battle for Senate control in 2016, fueling Republican attacks and creating divisions in contested Democratic primaries ahead of critical votes in Congress next month.

It’s a rare instance of foreign policy driving the debate in congressional races — in an off year, no less — and a potential preview of things to come if the Iran pact continues to generate heat into next year. Republicans are trying to portray Democrats backing the deal as weak on Israel and national defense. And some Democratic hopefuls are going after opponents for not taking a stand.

Read full story at Politico.