The county level analysis for SC and NH shows no vote flipping.
You do realize that nobody is disputing this, correct? The anomaly only is present when evaluating at the precinct level. That's the point. You're examining the wrong thing, and have been from the start.
However, we have precinct level data in other states using Obama% and Libertarian%. Those work.
And I have shown you that libertarian data is statistically insignificant, highly volatile from election to election, and as a result completely unreliable. Generally averaging around .03 to .04 percent of total votes, precincts show wild fluctuation from election to election.
Additionally, I have also shown you that even Obama/McCain precinct results are not particularly reliable. Republican strongholds in 2004 were won handily by Obama in 2008. This means you'd be weighting them as 'democratic' precincts, when looking back in history this may not be so. This may be attributed to a number of factors, including but not limited to: redistricting, Obamamania, and Bush fatigue. Regardless of what caused it, relying soley on 2008 election data for demographic information is flawed.
I wish we had current, 2012 precinct level demographics so you could better do your study. I really do. But your insistence on using data like libertarian results from 2008 to weight your charts when they have been shown to be completely unreliable from election to election invalidates your work.
I have provided you with many examples.
Here's one:
London Bridge, VBC:
1984 - Reagan won with 76% of the vote.
1988 - Bush Sr. won with 70% of the vote.
1992 - Bush Sr. won with 49% of the vote (Clinton 30, Perot 20)
1996 - Dole won with 49% of the vote (Perot took 9%)
2000 - Bush won with 56%
2004 - Bush won with 59%
and...
2008 - OBAMA won with 52% of the vote.
Republican voters absolutely abandoned McCain - around 500 less votes than normal (a loss of about 1/3). Other precincts show either similar Republican abandonment, or, in some cases, massive Obamamania.
In 2009, by the way, the Republican running for Governor (McDonnell) won with 63%, so it's still 'Republican'.
In 2010, Rigell (Republican) won with 55% for the House of Representives.
There are many, many precincts like this.
I realize you're stuck because 2008 precinct level election data seems like it should be indicative of the voting population. However, it just isn't. 2008 was an odd election, and turnout was not normal. Using 2008 data to identify 'Democratic' precincts for use as demographics is flawed. 2008 is not necessarily a good indicator.