Gadflyer Paul Waldman has an op-ed in the Boston Globe "Elections aren't about issues," arguing the primacy of identity as the key to future Democratic victories. As Waldman explains in the nut graph:

If there's one thing Republicans have understood and Democrats haven't, it is that politics is not about issues. Politics is about identity. The candidates and parties that win are not those aligning their positions most precisely with a majority of the electorate. The winners are those who form a positive image in the public mind of who they are (and a negative image of who their opponents are). Issues are a vehicle to create that identity, one that combines with symbolism and narrative to shape what the public thinks about when they think about Democrats and Republicans.

Waldman, author of Being Right Is Not Enough: What Progressives Must Learn From Conservative Success, makes a compelling case in clear, blunt language and his insights about strengthening Democratic campaigns deserve more attention.