(Bloomberg) -- The UK Labour Party handed the governing Conservatives two thumping defeats in a pair of special elections on Thursday in a setback for Prime Minister Rishi Sunak that reinforces the sense that the opposition is on course to win power at a general election due in the next year.Most Read from BloombergTrump Organization Hit With $365 Million Fine in Fraud TrialWall Street Ends Wild Week on Sour Note After PPI: Markets WrapAlexey Navalny, Jailed Activist Who Defied Putin, Dies at 47