Speaking as a former Chicagoan: the way you swing an election is with the connivance of the people who administer it, e.g., by making sure that the ballot boxes from “unfriendly” precincts end up in the bottom of the Chicago River.
Voter ID does nothing to prevent this sort of thing: the election officials in “friendly” precincts can just wink at forged or missing ID.
And voter ID makes a certain kind of election-skewing even easier, since officials in “unfriendly” precinct can discourage people from voting by rejecting valid ID, or simply by spending so long examining the IDs and arguing with the voters that everyone has to wait for hours in order to vote.
Voter ID does nothing to prevent this sort of thing: the election officials in “friendly” precincts can just wink at forged or missing ID.
And voter ID makes a certain kind of election-skewing even easier, since officials in “unfriendly” precinct can discourage people from voting by rejecting valid ID, or simply by spending so long examining the IDs and arguing with the voters that everyone has to wait for hours in order to vote.