Published version is:
Morgan, Stephen L. and Jiwon Lee. 2017. "The White Working Class and Voter Turnout in US Presidential Elections, 2004 to 2016." Sociological Science 4:656-85.
URL link is [here][1].
The online Supplementary Appendix with additional results is [here][2].
[1]: https://www.sociologicalscience.com/download/vol-4/november/SocSci_v4_656to685.pdf
[2]: https://www.sociologicalscience.com/download/vol-4/november/supplemental_materials/SocSci_v4_656to685_supp.pdf