Pennsylvania was the largest state of the five holding contests Tuesday.

"We won't see a presidential candidate like Bernie again in our lifetimes." As I heard these words, spoken by a woman at a Sanders campaign event recently, I felt a chill go through me. Because I knew she was right. We won't.

Hillary must continue to draw contrasts with Obama, raise questions about the nature and extent of his associations with Rev. Wright and terrorist leader William Ayers, and raise more questions about his values in comparison with hers.