Republicans’ road to taking back the U.S. Senate in 2022 just got a bit harder.

Only two weeks after New Hampshire Gov. Chris Sununu disappointed many by declining to run for Senate, a leading candidate in Pennsylvania suspended his campaign late Monday.

Sean Parnell, who was endorsed by former President Donald Trump earlier this fall, left the race after a judge ruled that his estranged wife should receive custody of their children in a case where she accused him of spousal abuse.

Declaring he was “devastated” by the decision and planned to appeal, Parnell added, “My focus right now is 100% on my children, and I want them to know I do not have any other priorities and will never stop fighting for them.”

The judge’s ruling followed a contentious three-day custody trial.

The seat, currently held by two-term Republican Sen. Pat Toomey, will be one of the most competitive U.S. Senate races next year, due to Pennsylvania being a swing state that flipped back to Democrats at the presidential level in 2020.