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If you read national political blogs, you're familiar with something called the PVI, or Partisan Voting Index. It's a rating system created by Charlie Cook that gives an idea of how Democratic or Republican a specific congressional district is, created by averaging the vote in a specific district in the last two presidential elections compared to the national vote in those elections. It's a useful metric, and gives a quick at-a-glance way of figuring out how competitive a specific district may be come election day. For example, Maryland's 8th congressional district is very Democratic at a PVI of D+20, or 20% more Democratic than the nation as a whole. I've created a version of the PVI for the Maryland General Assembly, for a couple of reasons. First, it is a useful way of measuring how successful the Democratic Party has been in getting moderate Democrats elected in districts that lean Republican. It's also useful if progressives are going to get serious about targeting Democratic incumbents who are too conservative for their district. It will make it easier to quantiatively define where conservative Democrats can be challenged in safe Democratic districts. Rather than using the last two elections as the basis of the index, I've used an average of the results from the last gubernatorial (O'Malley v. Ehrlich) and Senate (Cardin v. Steele) races. I didn't use 2002 results because the data is not as easily accessible on the state elections website. The results are laid out in a spreadsheet located here (Excel) or here (csv). And because I'm a visual person, I also created a map of Maryland's house districts based on the data: 
More after the fold...
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