Sturgeon: SNP 'could have balance of power'

Nicola Sturgeon has used her first speech as SNP leader to predict the party could hold the "balance of power" after the next general election.

Ms Sturgeon said the SNP would never do a deal which would put the Conservatives into power in the event of a hung parliament.

She said Scotland could win concessions from a Labour government at Westminster that depended on SNP MPs for support.

James Cook reports.