Original sentence: On 30 June 2016, Gove, who was campaign manager for Boris Johnson's drive to become Prime Minister, withdrew his support on the morning that Johnson was due to declare, and announced his own candidacy in the leadership election
Edited sentence: On 30 June 2016, Gove, who was campaign manager for Boris Johnson's drive to become Prime Minister, in a sickening display of disloyalty, and showing his true colours, withdrew his support on the morning that Johnson was due to declare, and announced his own candidacy in the leadership election