11:15BOOKtalkGavin BarwellBBC Parliament Duration: 15 minutes Tue 19th Apr 2016, 11:15 on BBC ParliamentMark D'Arcy talks to Gavin Barwell MP about his new book How to Win a Marginal Seat.ContributorsPresenter:Mark D'ArcyAuthor:Gavin BarwellGenresFactualPoliticsFactualArts, Culture & the MediaArtsFormatsDiscussion & TalkMagazines & ReviewsBrandBOOKtalk Source: BBC Online