This is ALL THINGS CONSIDERED from NPR News. I'm Melissa Block.
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And I'm Audie Cornish.
The deadly movie theater shooting in Aurora, Colorado has become a key issue in at least two tight congressional races in that battleground state. Since the attacks, two Democratic candidates - running in districts in and around Aurora - have called for stricter gun laws. But Republicans have accused them of trying to politicize the tragedy.
Every election season Republicans and Democrats tried to rally their base and to go after undecided voters. They're increasingly using the Internet in Get Out The Vote efforts.
NPR correspondent Shankar Vedantam, who reports on social science research, joins me now to talk about how Facebook could become a potent weapon in going after the biggest untapped voting bloc in the nation. Shankar, welcome.
SHANKAR VEDANTAM, BYLINE: Hi, Melissa.
BLOCK: Who are these mystery voters, this untapped voting bloc that we mentioned?
From NPR News, this is ALL THINGS CONSIDERED. I'm Audie Cornish.
MELISSA BLOCK, HOST:
And I'm Melissa Block. Support for same-sex marriage has come from what seems an unlikely corner - the NFL. Two NFL players have been vocal in urging support for same-sex marriage in ballot initiatives this fall. Well, that position from linebacker Brendon Ayanbadejo of the Baltimore Ravens drew the ire of a Maryland delegate, Emmett Burns, who urged the Ravens to silence their player.
It didn't take long for the attacks in Benghazi and Cairo to become part of the presidential campaign. Mitt Romney jumped in first. In a statement last night before Ambassador Stevens' death had been announced, Romney accused President Obama of sympathizing with those who waged the assault. The Obama campaign responded, saying it was shocked that Romney would launch a, quote, "political attack" at this moment. And the politics have continued today as NPR's Mara Liasson reports.
The U.S. poverty rate last year was unchanged from the year before, according to new figures Wednesday from the Census Bureau. But that still means almost 1 in 6 Americans was poor.
The new data show that 46.2 million people in the U.S. lived below the poverty line — about $23,000 for a family of four. The number of poor was almost exactly the same as it was the year before, but still historically high.
We turn now to Washington for more reaction to this brazen attack. The Obama administration is sending a Marine anti-terrorism unit to bolster security in Libya. It's also taking precautions elsewhere. The stepped up security comes as the State Department mourns its losses. NPR's Michele Kelemen has that story.
MICHELE KELEMEN, BYLINE: Shock and sadness hovered over the State Department as Secretary of State Hillary Clinton spoke of the devastating losses of four foreign service personnel.
This morning, Secretary of State Hillary Clinton said this about the slain ambassador, Christopher Stevens.
SECRETARY HILLARY CLINTON: He risked his life to stop a tyrant, then gave his life trying to help build a better Libya. The world needs more Chris Stevenses.
BLOCK: Earlier this year, before Chris Stevens assumed his position as ambassador to Libya, he made a video, subtitled in Arabic, directed to the Libyan people. It was posted on the U.S. Embassy's website and on YouTube.
The numbers for West Nile virus cases continue to rise, up 35 percent in the last week. But the Centers for Disease Control and Prevention is confident the nation has turned the corner on its worst-ever epidemic of West Nile virus disease.