Election law professor Justin Levitt has a comprehensive web page, “All About Redistricting”. See it at redistricting.lls.edu. Among other features, it has information about all known lawsuits involving redistricting since the 2010 census results came out.
ANTI-Democracy minority rule (MONARCHY/OLIGARCHY) gerrymanders 24/7 — since the 1200s.
Too many gerrymander math MORONS to count — esp. in SCOTUS.
1/2 votes x 1/2 gerrymander districts since 1964 = 1/4 Control = 25 percent.
Actual about 28-32 percent CONTROL – indirectly.
Before 1964 the math was in the 5-15 percent indirect control range in many rotted State regimes — the EVIL bad old days.
P.R. and nonpartisan App.V.
http://en.wikipedia.org/wiki/Gerrymandering
NOTHING new since the 1200s in the English House of Commons – a gerrymander system — AREA fixation.
The MORON lawyers play their MORON games with the 15th Amdt — i.e. 1965 VRA perversion and the Equal Protection Clause.
SCOTUS sits like a group of math MORONS since the 1960s.