Photo ID to vote

Supreme Court says states can demand photo ID for voting
By MARK SHERMAN, Associated Press Writer
Mon Apr 28, 6:09 PM ET

WASHINGTON - States can require voters to produce photo identification, the Supreme Court ruled Monday, upholding a Republican-inspired law that Democrats say will keep some poor, older and minority voters from casting ballots.
http://news.yahoo.com/s/ap/20080428/ap_on_go_su_co/scotus_voter_id

The right to vote is protected in more than the initial allocation of the franchise. Equal protection applies as well to the manner of its exercise. Having once granted the right to vote on equal terms, the State may not, by later arbitrary and disparate treatment, value one person's vote over that of another.

SUPREME COURT OF THE UNITED STATES
GEORGE W. BUSH, et al., PETITIONERS v.
ALBERT GORE, Jr., et al.
ON WRIT OF CERTIORARI TO THE FLORIDA SUPREME COURT
[December 12, 2000]
http://www.law.cornell.edu/supct/html/00-949.ZPC.html

and so, a question. How does Indiana or the Supreme Court propose to check the photo ID of people voting by absentee ballot? If they don't, then wouldn't they be advocating treating voters and their votes differently? And wasn't THAT the basis for the Supreme Court's decision in bush v Gore?