With Deal in Hand, Democrats Enter the Fall Armed With Something New: Hope

Vulnerable incumbent Democratic senators like Maggie Hassan of New Hampshire and Catherine Cortez Masto of Nevada are already planning events promoting the landmark legislation they passed over the weekend. Democratic ad makers are busily preparing a barrage of commercials about it across key battlegrounds. And the White House is set to deploy Cabinet members on a nationwide sales pitch.

The sweeping legislation, covering climate change and…