Former US Secretary of State Hillary Clinton is expected to formally declare her run for the 2016 Democratic presidential nomination shortly.

Mrs Clinton, who also served as a senator for New York, ran for the Democratic presidential nomination in 2008 but lost to Barack Obama.

The overwhelming Democratic favourite, she has been expected to declare her candidacy for months.

Mrs Clinton was also first lady when her husband Bill Clinton was president.
She is expected to declare via social media.