Vice Presidential candidate Paul Ryan makes his national debut tonight with a speech that will focus on drawing contrasts with President Obama, not on the policy proposals that have made him a conservative star.

"I don't expect this to be a policy speech. It's a convention speech," a top aide told CBS News.

According to advance excerpts, Ryan will call Obama's health care plan "more than two thousand pages of rules, mandates, taxes, fees, and fines that have no place in a free country." He will set a goal, as his running mate Mitt Romney has, to create 12 million jobs in four years. 

Echoing New Jersey Gov. Chris Christie's keynote Tuesday night, Ryan plans to say that the Republican ticket will rise to the times by taking on the hard tasks.

"We will not duck the tough issues – we will lead," he will say. "We will not spend four years blaming others – we will take responsibility. We will not try to replace our founding principles,  we will reapply our founding principles."

Read the full excerpts here.