Politically, Portsmouth is a center of liberal politics and stronghold for the Democratic Party. In 2016, Portsmouth voted 67.70% for Hillary Clinton in the United States presidential election, 2016, 62.53% for Colin Van Ostern in the New Hampshire gubernatorial election, 2016, 64.48% for Maggie Hassan in the United States Senate election in New Hampshire, 2016, and 62.16% for Carol Shea-Porter in the United States House of Representatives elections in New Hampshire, 2016. In 2014, Portsmouth voted 70.05% for Maggie Hassan in the New Hampshire gubernatorial election, 2014, 67.34% for Jeanne Shaheen in the United States Senate election in New Hampshire, 2014, and 68.34% for Carol Shea-Porter in the United States House of Representatives elections in New Hampshire, 2014. In 2012, Portsmouth voted 67.56% for Barack Obama in the United States presidential election, 2012, 70.16% for Maggie Hassan in the New Hampshire gubernatorial election, 2012, and 68.50% for Carol Shea-Porter in the United States House of Representatives elections in New Hampshire, 2012.
Question: How many more percent of the vote did Carol Shea-Porter get in 2012 than she did in 2016?
Answer: 6.64