Former Vice President Al Gore is back on the campaign trail, warning against climate change with Hillary Clinton.

FOX's Jared Halpern has more:

Al Gore, who served as President Bill Clinton's Vice President, campaigned for the first time with Hillary Clinton at a registration rally in Miami:

(Gore) "Your vote really, really, really counts. A lot."

Gore, who narrowly lost the 2000 Presidential election says he's exhibit A of that truth. The former Vice President is an environmental advocate, a major theme of Clinton's South Florida speech:

(Clinton) "We cannot keep sending climate deniers and defeatists to Congress, or state houses, and certainly not to the White House."

Clinton called out Republican Donald Trump for characterizing climate change as a hoax.

Jared Halpern, FOX News.

Follow Jared Halpern on Twitter: @JaredHalpern