Can LibDem Ed Davey beat Mariah Carey to Christmas number one?

Liberal Democrats leader Sir Ed Davey is hoping to reach Christmas number one after recording a single with Bath Philharmonia Young Carers' Choir. • Subscribe to ITV News on YouTube: http://bit.ly/2lOHmNj • Get breaking news and more stories at http://www.itv.com/news Follow ITV News on Facebook: https://www.facebook.com/itvnews/ Follow ITV News on Twitter: https://twitter.com/itvnews Follow ITV News on Instagram: https://www.instagram.com/itvnews/