As I previously noted, President Obama’s job approval has been plummeting in heavily Democratic states like California and New York, which has negative implications for Democrats in House, if not statewide, races. This is not a unique phenomenon: As I wrote in a long piece on the current status of the Republican Party, there is a pattern, not inevitable but common, of a party’s wingers growing discontented in the second term of their party’s presidency. As I described it: