The key to the 2018 midterms is the Keystone State.
Pennsylvania holds the key to the 2018 midterms for Democrats — and could determine which party will control the House of Representatives come January 2019.
The good news started for Democrats in this month’s special election for Pennsylvania’s 18th congressional district: Conor Lamb beat Republican Rick Saccone in a district that Donald Trump won by 20 points in 2016 and that Republicans had held for 15 years. It kept flowing this...