Adam --

There is a lot, though many gaps exist in our knowledge of other systems.  
Good places to begin are:

Gary Cox, Making Votes Count.
Dieter Nohlen, several new books on election law in different areas published 
by Oxford UP.
Josep Colomer, The Handbook of Electoral System Design, forthcoming.

ACE has a web site and allows you to query it about lots of election law.  You 
might also try IDEA in Sweden.

Best, FL

===== Original Message From "Adam Lioz" <alioz@pirg.org> =====
Folks,

Does anyone know of any references/resources that survey and compare
election law in the world's democracies?

Thanks for any input.

Adam

Adam Lioz
Democracy Advocate
U.S.PIRG
202.546.9707