Party on course to lose 30 of the 57 seats it won in 2010 , sources say . Clegg admits party is fighting 'tooth and nail ' in a tenth of constituencies . Aides think that even a third seats could be enough to hold balance of power .
Party on course to lose a third of the 57 seats it won in 2010 , sources say . Clegg admits party is fighting 'tooth and nail ' in a tenth of constituencies . Aides think that even 30 seats could be enough to hold balance of power .