Complex sentence: Bradlaugh was re-elected four times by the constituents of Northampton until he was finally allowed to take his seat in 1886, but Queensberry was never again sent to Parliament by the Scottish nobles.
Split into simpler sentences: Bradlaugh was re-elected four times by the constituents of Northampton until he was finally allowed to take his seat in 1886. Queensberry, however, was never again sent to Parliament by the Scottish nobles.