Tories worry the loss of the Chesham and Amersham seat could be due to the PM's planning reforms.
Areas along the green belt fear government plans to automatically green light development projects without allowing local residents an opportunity to object.
Sky's Paul Kelso spoke with some residents in Chesham and Amersham to hear their concerns.
SUBSCRIBE to our YouTube channel for more videos: www.youtube.com/skynews
Follow us on Twitter: twitter.com/skynews
Like us on Facebook: www.facebook.com/skynews
Follow us on Instagram: www.instagram.com/skynews
For more content go to news.sky.com and download our apps:
Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí www.youtube.com/channel/UCzG5BnqHO8oNlrPDW9CYJog