Gerrymandering is the main topic on this Washington post article.  I am from Venezuela, born and raised there. I can totally see how the changes in the senate and government has declined how the old Venezuela used to be.  A great example is part of other article I read and I took a piece of to show how this relates to Gerrymandering:

Prior to the 26 September 2010 legislative elections, gerrymandering took place via an addendum to the electoral law by the National Assembly of Venezuela . In the subsequent election, Hugo Chávez's political party, the United Socialist Party of Venezuela drew 48% of the votes overall, while the opposition parties (the Democratic Unity Roundtable and the Fatherland for All parties) drew 52% of the votes. However, due to the re-allocation of electoral legislative districts prior to the election, Chávez's United Socialist Party of Venezuela was awarded over 60% of the spots in the National Assembly (98 deputies), while 67 deputies were elected for the two opposition parties combined.