A Bexar County court-at-law judge elected during the “red tide” of 2010 is switching parties.Standing at the foot of the Bexar County Courthouse steps, County Court-at-Law No. 11 Judge Carlo Key said Monday that he is joining the Democratic Party and will seek re-election as a Democrat in November 2014.“Make no mistake, I did not leave the Republican Party, it left me,” said Key,flanked by high-ranking Democrats. “My principles have led me to the Democratic Party,and my only hope is that more people of principle will follow me.”While he's been considering the decision for several weeks,it was the recent federal...