Complex sentence: In February 2007, Rahman announced his application to be selected as the Labour Party's prospective parliamentary candidate for Bethnal Green and Bow, but when party members voted he came second to Rushanara Ali, who went on to win the Parliamentary seat.
Split into simpler sentences: In February 2007, Rahman announced his intention to be the prospective Labour Party candidate for Bethnal Green and Bow. However, he came second to Rushanara Ali who went on to win the Parliamentary seat.