Donald Trump has taken a commanding lead over Kamala Harris in a U.S. election battle that will determine the country's future and have global implications. As attention turns to seven key swing states, Trump's chances of winning surpassed 90% just after 6 a.m. Greek time.

Trump has already secured victories in swing states of North Carolina and Georgia and holds a lead in four additional swing states, including Pennsylvania. Meanwhile, the Republican Party has regained a majority in the Senate, according to the Associated Press, after securing seats in Ohio and West Virginia and fending off challenges to its candidates in Texas and Nebraska.

The Republicans will control the upper house of Congress for the first time in four years. Should Donald Trump win the presidency, they will be in a position to confirm Supreme Court justices, federal judges, and cabinet appointments. If Kamala Harris wins the White House, they could stall her appointments or block them entirely.