But with bipartisan opposition growing, it’s still unclear how the issue will affect the midterm results.By Emilie LounsberryALLENTOWN, Pa.—In all her 38 years living in South Whitehall Township in the Lehigh Valley, Laurie Gilley had never attended a municipal meeting, much less gotten involved in the politics of her community. But then she learned that a data center was being planned for 400 acres of land across from her home and the local high school.