Original sentence: She took over as the party leader in 1998, seven years after the  assassination of her husband, Rajiv Gandhi, and remained in office for a record nineteen years
Edited sentence: She took over as the party leader in 1998, seven years after the  assassination of her husband, Rajiv Gandhi, and remained in office for a record nineteen years, a period that was characterised by the party's renewed adherence to the centre-left position on the Indian political spectrum