Complex sentence: The current acting leader of the party is Steve Crowther, who took over on 9 June 2017 following the resignation of Paul Nuttall after the party's poor performance in the 2017 General Election.
Split into simpler sentences: The current acting leader of the party is Steve Crowther. Crowther took over on 9 June 2017 following the resignation of Paul Nuttall after the party's poor performance in the 2017 general election.