Former Vice President Al Gore urged Democrats to seize the opportunity for change by electing their candidate for president.

Click play to watch a portion of Al Gore's speech.

"One of the greatest gifts of our democracy is the opportunity it offers us every four years to change course. It's not a guarantee; it's only an opportunity. The question facing us is, simply put, will we seize this opportunity for change?" Gore said Thursday night at the Democratic National Convention.

He told the crowd of 75,000 gathered at INVESCO Field that electing John McCain would only continue Bush-Cheney policies.

"Hey, I believe in recycling, but that's ridiculous," he said. "If you believe it's time for a change, then vote for Barack Obama."

In 2000, Gore narrowly lost the electoral vote to George W. Bush when a recount in Florida was ordered to a halt.