Blue-collar voters are sticking with him, but the white collars are fraying.

CNN: It's My Party And I'll Run If I Want To

The largest crowd by far was made up of lawyers in starched collars, white shirts, and black suits.

NEWYORKER: Days of Rage

The plant's 200 workers must now be computer-literate, although their collars are not yet entirely white.

ECONOMIST: Petri-dish economies