"This is heart-breaking for me and for our whole Liberal Democrat family.
Shirley has been an inspiration to millions, a Liberal lion and a true trailblazer. I feel privileged to have known her, listened to her and worked with her. Like so many others, I will miss her terribly.
Political life will be poorer without her intellect, her wisdom and her generosity. Shirley had a limitless empathy only too rare in politics today; she connected with people, cared about their lives and saw politics as a crucial tool to change lives for the better.
The Liberal Democrats are asking people across our community who care for relatives to get in touch and share their story - to mark national Carers Rights Day.Liberal Democrat party leader Ed Davey has said he wants the party to be a "strong voice" for the millions across the country - including 9,408 people in Darlington who care for those who need it.
Ed himself knows the burden put on carers for family members - having been a carer for his mum when growing up and now caring for his disabled son.Being a carer herself, Cllr Anne-Marie Curry said:"Millions of people across the country act as unpaid carers for loved ones. This year has highlighted more than ever the issues many of them face."
If you are a carer - or someone who receives regular care support from a relative or a friend - we want to hear from you. Please get in touch with us and share your story.