America is becoming more conservative

From a column in The Atlantic (one of my two favorite magazines, btw...) discussing recent Gallup data:

Americans at this political moment are significantly more likely to identify as conservative than as liberal: conservatives outnumber liberals by nearly two to one. Forty percent identify as conservative, 36 percent as moderate, and 21 percent liberal.

The map above charts the ideological divide across America’s states. There are four states where conservatives make up more than half the population: Mississippi, Utah, Wyoming, and Alabama. Conservatives make up more than 40 percent in 20 more states. Liberals now outnumber conservatives in just one state, Massachusetts, and the District of Columbia.

The article then goes on to show charts demonstrating correlations (not causations necessarily) between consevatism and religion, college education, and "working class" status (graphs at the link).  The time-trending data are not present at this link.