Sen. Maggie Hassan, a New Hampshire Democrat who is running for a second term next year, has been working behind the scenes to help craft a bipartisan infrastructure deal that could be popular in her swing state.

But she soon will have to make a decision that is bound to be much more divisive: whether to endorse the Democrats’ more sweeping $3.5 trillion proposal to expand the social safety net, overhaul immigration laws, grow Medicare and Obamacare, combat climate change and raise corporate taxes to help pay for it.

“I’ve just been focusing on the bipartisan infrastructure negotiations right now,” Hassan said when asked about the