By Cherri Gregg

HARRISBURG, Pa. (CBS) – The ACLU challenge to Pennsylvania’s voter ID law continues Monday in its fourth day of testimony, with even more state officials heading to the hot seat.

During the first three days of testimony, Judge Robert Simpson heard from plaintiff experts that nearly a million registered voters could be turned away at the polls this November.

Department of State and PennDot officials also took the stand saying they are reaching out to voters, but only expect that a few thousand will actually need a voter ID.

Plaintiff attorney Jennifer Clarke.

“We established some important things,” said Plaintiff attorney Jennifer Clarke. “The fact that even though there are possibly a million people who don’t have ID, really they are not set up to get those people free IDs to people in time for election.”

This week the ACLU is expected to call key witnesses, including Secretary of Commonwealth Carole Aichele, as well as an expert on voter fraud.

Attorneys for the plaintiffs say they also plan to present videotaped comments from State House Majority leader Mike Turzai.

The preliminary injunction hearing is scheduled to close by the end of the week.

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