Gallup first asked Americans to describe their views on social issues in 1999, and has repeated the question at least annually since 2001. The broad trend has been toward a shrinking conservative advantage, although that was temporarily interrupted during the first two years of Barack Obama’s presidency. Since then, the conservative advantage continued to diminish until it was wiped out this year.

The newfound parity on social ideology is a result of changes in the way both Democrats and Republicans describe their social views. The May 6-10 Gallup poll finds a new high of 53% of Democrats, including Democratic-leaning independents, describing their views on social issues as liberal.