The Pennsylvania Supreme Court on Tuesday rejected arguments by President Donald Trump’s campaign that Republican election observers were improperly denied access to closely watch ballot counting in Philadelphia after the presidential election, CNBC reported.

The loss could harm the Trump campaign’s related legal effort in federal court in Williamsport, where it is trying to block Pennsylvania from certifying its election results in coming weeks.

If the Trump campaign fails in that case, it is unlikely to be able to reverse President-elect Joe Biden’s projected victory not only in Pennsylvania, but also nationally.