In April, Rasmussen Reports found that 70 percent of likely US voters approved of the photo ID requirement, while 22 percent were opposed.
A three-judge federal panel ruled two weeks ago that the Texas voter ID statute discriminated against prospective voters who are elderly and low-income. That decision is being appealed. The South Carolina challenge is set to be argued before a three-judge panel in Washington later this month.
The Justice Department is also considering whether to file its own challenge to the Pennsylvania law.
The voter ID issue is one of several legal disputes swirling around the approaching presidential election. With the contest expected to be tight to the end, lawyers are poised to challenge any provision that might have an impact on who wins.
Oral argument in the Pennsylvania ID case is set to be heard Thursday morning in Philadelphia by six of the Pennsylvania high court’s seven justices. The politically sensitive case could test the ideological balance of the court, which is comprised of three Democrats and four Republicans.