William Miller McSwain is an American attorney and a former United States Attorney for the Eastern District of Pennsylvania, a position he held from April 6, 2018 to January 22, 2021. He was nominated to the post by President Donald Trump. After leaving his position as U.S. Attorney, McSwain entered private practice at Duane Morris LLP. He then ran, unsuccessfully, for the Republican nomination for Governor of Pennsylvania in 2022 after which he again returned to private practice.

The 2022 Pennsylvania gubernatorial election was held on November 8, 2022, to elect the governor of Pennsylvania and lieutenant governor of Pennsylvania. State Attorney General Josh Shapiro defeated State Senator Doug Mastriano by 14.8 percentage points to succeed term-limited incumbent governor Tom Wolf (D). Primaries were held on May 17, 2022. Shapiro won the Democratic nomination after running unopposed and Mastriano won the Republican nomination with 44% of the vote. Mastriano's nomination drew attention due to his far-right political views.