Complex sentence: Portillo was first elected to the House of Commons in a by-election in 1984; a strong admirer of Margaret Thatcher, and a Eurosceptic, Portillo served as a junior minister under both Thatcher and John Major, before entering the cabinet in 1992.
Split into simpler sentences: Portillo was first elected to the House of Commons in a by-election in 1984. A strong admirer of Margaret Thatcher, and a Eurosceptic, Portillo served as a junior minister under both Thatcher and John Major, before entering the cabinet in 1992.