Tom Steyer recently said in a video that "climate change is not just an important issue, it's the issue. And we need leaders who will take it seriously." Isaac Brekken/Getty hide caption

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Secret Service respond on the North Lawn of the White House after a man jumped the White House fence Wednesday night. This latest incident comes about a month after a previous fence-jumper sprinted across the lawn, past armed uniformed agents, and entered the Executive Mansion. Jacquelyn Martin/AP hide caption

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In her revised dissent, Justice Ruth Bader Ginsburg clarified that photo ID cards issued by the Veterans' Affairs are "an acceptable form of photo identification for voting in Texas." Cliff Owen/AP hide caption

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Ballots from June 2014 marked "too late" in Sacramento County, Calif. Kim Alexander/Courtesy California Voter Foundation hide caption

itoggle caption Kim Alexander/Courtesy California Voter Foundation

A Canadian soldier who was shot outside the war memorial on Parliament Hill in tended to in Ottawa on Wednesday. Daniel Thibeaut/CBC/Reuters /Landov hide caption

itoggle caption Daniel Thibeaut/CBC/Reuters /Landov

In this campaign ad, GOP candidate Terri Lynn Land sips coffee after asking the viewer to "think about" accusations that she's waging a war on women. Terry Land/YouTube hide caption

itoggle caption Terry Land/YouTube

President Obama casts an early ballot for the midterm elections at the Dr. Martin Luther King Community Service Center in Chicago on Monday. Brendan Smialowski/AFP/Getty Images hide caption

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Republican senatorial candidate Joni Ernst speaks to the media after a debate. Polls show Democrat Bruce Braley running as many as 14 points ahead of Ernst among women. Justin Hayworth/AP hide caption

itoggle caption Justin Hayworth/AP