The tone of Democratic calls for Biden to step aside has hardened his desire to stay in the race: 'It's like they don't know he's Irish'

• Biden faces growing calls to exit the race as he recovers from COVID-19 in Delaware.
• But the tone of the pleas has only hardened his decision to stay in the contest, the Post reports.
• Biden is eyeing a return to the campaign trail soon, with possible stops in Georgia and Texas.

Since late Wednesday, President Joe Biden has been hunkered down in Delaware, recovering from his latest bout with COVID-19.