Martin O'Malley

The most valuable investment we can make is in our children's education. When we make education a priority, we give our children opportunity. Opportunity to learn at higher levels than their parents were able to learn; to earn at higher levels than we were able to earn.

In 1979, the Supreme Court ruled 5-3 in Smith v. Maryland that a few days' worth of phone records for a single individual were not protected by the Fourth Amendment. The NSA today, though, collects hundreds of millions of phone records from hundreds of millions of Americans without an individualized warrant.

It took us 200 years to elect the first Democratic woman to the Senate in her own right, and that's Barbara Mikulski. Six years later, we had a grand slam: We elected four new Democratic women to the Senate. Sen. Mikulski now has some company.