A new feature. Posted occasionally. Can we keep it up? What are the odds?  Herein, USEFUL tweets of the day:

http://twitter.com/ryanobles (@ryanobles) for coverage of tonight's primary in Virginia.

http://twitter.com/ktumulty (@ktumulty) Karen Tumulty, with a link to her piece on the House health care draft's "surprisingly" weak public plan option.

http://twitter.com/LawCues (@lawcues) What the Supreme Court's say in the Chrysler/Fiat merger means.

http://twitter.com/murphymike (murphymike) RIP, Ernest May