Complex sentence: Formerly a minister within both the Blair and Brown Governments, she first entered the Shadow Cabinet in May 2010 as the Shadow Leader of the House of Commons, and on 29 September 2010 she was nominated to stand unopposed as Labour Chief Whip.
Split into simpler sentences: Formerly a minister within both the Blair and Brown Governments, she first entered the Shadow Cabinet in May 2010 as the Shadow Leader of the House of Commons. On 29 September 2010 she was nominated to stand unopposed as Labour Chief Whip.