Donald Trump is leading in the race to become US president for the first time since May.

The ABC/Washington poll has out the Republican candidate on 46% and Hillary Clinton on 45%, however, most other polls have Clinton still in the lead.

The slight shift in support comes after the FBI announced that it was once again investigating Clinton's use of government emails,

Despite rejecting previous polls, Trump seemed boosted by the latest result at rally in Wisconsin last night.

But Hillary is back on the offensive, at her own rally in Dade City in Florida, she focused on his demeaning comments about women, describing her rival as a bully. Almost simultaneously, her campaign released this TV ad:

Kim Buckley has this report: