给你一篇英文新闻报道，要求你从中找到所有人名，并按照出现频率从高到低列出这些人名。输出人名和它们的出现次数。
Amid a series of stinging legal setbacks, President Donald Trump's campaign and the Republican Party have been working to shore up a deteriorating position in Pennsylvania.
President-elect Joe Biden won the swing state by more than 80,000 votes, but that hasn't stopped Trump's legal team from filing numerous lawsuits - and tied up state officials for weeks - to try to flip the results. Despite the majority of the cases being dismissed or rejected by judges, and no evidence of widespread voter fraud or irregularities being found, Trump and his allies have continued to challenge the outcome in Pennsylvania and other battleground states where Biden won.
人名及其出现次数：

- Donald Trump: 2次
- Joe Biden: 2次