Pennsylvania certifies Biden as winner of presidential vote

HARRISBURG: Democrat Joe Biden has been certified as the winner of the presidential election in Pennsylvania, the governor said Tuesday.
Gov. Tom Wolf, a Democrat, tweeted that the Pennsylvania State Department ``certified the results of the November 3 election in Pennsylvania for president and vice president of the United States.
``As required by federal law, I've signed the Certificate of Ascertainment for the slate of electors for Joe Biden and Kamala Harris.``
President Donald Trump, who lost the state's 20 electoral votes to Biden, has made Pennsylvania a centerpiece of his unsuccessful legal attempts to invalidate the election results.