(Reuters) - Donald Trump has won the presidential election in Arizona, Edison Research projected on Saturday, completing a sweep of all seven battleground states and locking in a decisive Electoral College victory over Democratic Vice President Kamala Harris.

Trump, who had secured the 270 Electoral College votes needed to win the White House by early Wednesday, now has what is expected to be a final total of 312 votes to Harris' 226.

(Reporting by David Lawder and Ismail Shakil; Editing by Tom Hogue)