A Second Civil War?

Over at Instapundit, Glenn Reynolds is hosting a conversation that is discussing the similarities between Sarah Palin's recent facebook speech and one of President Lincoln's speeches. This led to speculation about whether some (Democratic) States would secede if Palin (Republican) was elected president as some (Democratic) States seceded when Lincoln (Republican) was elected president. One reader asked:

ANOTHER UPDATE: Reader Joe Pompeo writes: “Based upon the Lincoln quote it would appear that Sarah Palin, rather than acting ‘unpresidential’ in her response this week as her critics claim, was acting quite presidential after all. Even Lincoln-esque.” Does this mean that if we elect Sarah Palin President, New York, Massachusetts and California will secede?

My immediate response was to wonder: If New York, Massachusetts and California seceded - would the rest of the United States fight to get them back?