This week we asked you to send in your questions for Sir Menzies Campbell.
The BBC's political editor, Nick Robinson, put some of those points to the Liberal Democrat leader.
The interview took place at the party's annual conference in Brighton.
Watch the interview by following the link below:
The issues you raised in more than 300 e-mails included climate change, taxation, the Iraq situation and the party's future.
Watch a few of the comments you made.