Protesters opposed to Pennsylvania's will rally at noon today at 7th and Hamilton streets in Allentown.
Also, the state Commonwealth Court today plans to open a hearing on a lawsuit seeking to block the law from taking effect on Nov. 6 - Election Day.
Hundreds of people rallied against the law in Harrisburg on Tuesday.
Meanwhile, the U.S. Department of Justice is looking into whether Pennsylvania's new law requiring a valid photo ID to vote complies with federal laws.
Proponents say the law will help crack down on voter fraud, but opponents say the and the law is politically motivated to disenfranchise some voters.
About 9 percent of Pennsylvania voters do not have a valid ID to vote per the requirements of the new law.