Convalescing Clinton back in fight

President Obama throws full support behind ex-secretary of state's campaign for top job

Hillary Clinton returns on Thursday to the White House campaign fray after a few days at home recovering from pneumonia in a health scare that rocked her bid to become the first woman president of the United States.

The Democratic nominee's spokesman Nick Merrill said in a statement late on Tuesday that Clinton spent time at home "catching up on reading briefings, making calls", and watching Barack Obama's rousing speech in Philadelphia, in which the president offered unstinting praise of his former secretary of state.