For reasons that need not concern anyone but me — and maybe not even me — I’m not having one of my more coherent writing days. Here is something to discuss until I pull my head back together.

Gallup Poll says Obama is extending his lead over Clinton. Is the scorched-earth campaign backfiring?

See Josh Marshall, “All the Way to Denver.” Steve Benen says that at some point Dem party leaders are going to have to intervene and stop the nomination fight.

Frank Rich says the Clinton campaign is clueless about the Web, among other things.