US election 2016: 'No-one is more conservative than me' says Trump

Republican Donald Trump has underlined his conservative credentials in a victory speech in Florida, moments after winning two more states in his quest for the presidential nomination.

'No-one is more conservative than me' on education, healthcare, veteran care and the border, he told supporters.

His wins on Tuesday in Michigan and Mississippi give him a clear lead ahead of Senator Ted Cruz and the rest of the Republican field.