Gov. Chris Christie: Democrats 'driving us off the fiscal cliff'

Christie pledged that the Republican ticket would usher in “a second American century” defined by leaders willing to confront the difficult issues.

“Tonight, we choose the path that has always defined our nation’s history,” he said. “Tonight, we finally and firmly answer the call that so many generations have had the courage to answer before us.”

Christie’s speech boosted Romney, but was also designed to introduce the governor to a national audience, just as Obama’s keynote address at the 2004 Democratic convention, when he was a state senator in Illinois, thrust him into the spotlight.

Christie has become a national figure since his election in 2009, and is now seen as someone who could lead a future GOP ticket.

Read more on Christie's keynote speech on The Hill.