Biden Aims to Pump Energy Into Campaign After a Fiery National Address

In his State of the Union address, President Biden laid out a campaign blueprint for the next eight months, assailing Donald J. Trump as a threat to democracy, vowing to protect abortion rights and aiming to reassure voters who are worried that he is too old for the job.

The president’s broadside from the House floor on Thursday, which might end up resembling his remarks this summer at the Democratic National Convention, kicked off what his campaign said would be a furious period of ramp-up activity after months of sluggishness.

Mr. Biden will campaign in the Philadelphia suburbs on Friday afternoon and in Georgia on Saturday, and then travel next week to New Hampshire, Wisconsin and Michigan, his campaign manager, Julie Chávez Rodríguez, said on Friday. Vice President Kamala Harris will appear in Arizona and Nevada, Ms. Chávez Rodríguez said.

“The general election is just starting to crystallize for voters across the country, and we’re taking advantage of the moment to meet them where they are,” she said.

On Friday morning, the Biden campaign also announced a $30 million advertising campaign over the next six weeks. Campaign aides said they expected to hire 350 new staff members and open 100 offices across battleground states in the next month — an announcement that is likely to hush some of the public and private grumbling from allies that the president’s operation has been slow-moving.

The morning after the president framed the election as a choice between him and Mr. Trump on issues of democracy and freedom, his aides sought to compare what they described as their robust operation with what the former president had built.