President-elect Joe Biden will win the battleground state of Arizona, Edison Research projected on Thursday, dealing another blow to President Donald Trump's struggling effort to overturn the results of the Nov. 3 presidential election.

Biden's win in Arizona gives the Democrat 290 electoral votes in the state-by-state Electoral College that determines the winner, more than the 270 needed to claim victory. Biden is also winning the popular vote by more than 5.2 million votes, or 3.4 percentage points.