The war for Pennsylvania's Democratic delegate votes will be more like a series of battles.
Sen. Hillary Clinton's presidential hopes may rest on the state's more than 4 million Democratic voters as she faces off Tuesday with Sen. Barack Obama of Illinois.
The senator from New York trails Obama by 144 delegates, according to a CNN tally, but a win Tuesday could build momentum for her. The polls close at 8 p.m. ET. Read full article »
CNN's John King contributed to this report.