Michele Bachmann
Media playback is unsupported on your device
Video

Tea Party's Michele Bachmann runs for president

A Republican Congresswoman, who is a favourite of the influential Tea Party movement, has formally joined the race for next year's US presidential election.

Michele Bachmann is an economic conservative and a fierce opponent of abortion and gay marriage.

She has described herself as a 'bold choice' for president.

The latest polls in Iowa, her home state, have shown that she is neck and neck with the Republican front runner, Mitt Romney.

Mark Mardell reports.

Go to next video: Bachmann enters Republican race