Daily Liberal Mapping Project: Hope for Tinklenberg in CD-6

This is the third of nine articles in the Daily Liberal Mapping Project. These articles examine Minnesota's voting patterns precinct by precinct, with data from the 2006 election. Perhaps you missed my analysis of CD8 and CD7?

In this edition of the Daily Liberal Mapping Project, we finally get to a race with a serious Congressional campaign -- the 6th Congressional District. CD6 is the former district of Republican Mark Kennedy and currently held by Republican Michele Bachmann. Elwyn Tinklenberg, a moderate Democrat, is challenging Bachmann for the seat. RealClearPolitics recently called Bachmann one of the most endangered representatives in the country, and but CD6's conservative voting patterns mean a tough race for Tinklenberg. Handicapper Stuart Rothenberg labels the race "favored Republican".

The district voted overwhelmingly Republican in 2006, and has a Cook Partisan Voting Index of R+5. Almost all of the precincts in the district, except those in the southeastern corner, voted Republican in 2006. However, less than half voted heavily (60% or more) for Republicans, which may indicate an opportunity for Tinklenberg to pick up some votes. MNPublius noted that being cross-endorsed by the Independence Party should help Tinklenberg close the gap. Al Franken, who is more liberal than Tinklenberg, should expect trouble in this district.

Another difficulty for Tinklenberg and Franken may be that 6th district voters are less likely than many Minnesotans to cross party lines. Volatility is a measure of variation across races. Precincts with high volatility are those that see a lot of ticket-splitters. As the map below shows, only a few districts have volatility higher than the state median.

There's one thing keeping this race competitive, which is turnout. Turnout is moderate to poor throughout the district, with one exception -- the democratic-leaning southeastern portion of the district. With John McCain heading the ticket for the Republicans in 2008 and conservatives' enthusiasm at a low, turnout could be even more depressed. Low turnout from Republicans and high turnout from Democrats could make this race seriously competitive.

The final map shows the combined effect of turnout and party preference, and illustrates the above point clearly. This map combines voting percentages and turnout into a single measure, the percent of eligible voters that voted for the winning party. Looking at this measure, there are no precincts that had a high proportion of Republican voters. Democrats, on the other hand, are helped slightly by turnout. Just as McCain's campaign may depress turnout further, expect Obama's candidacy to drive turnout by Democrats. Will his coattails be enough to put Tinklenberg in the House?

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