Ed Still’s votelaw blog reports that South Carolina Democrats may move their presidential primary from January 29 to January 19, and also that Nevada Democrats may move their caucus from January 19 to January 12. South Carolina and Nevada are two of the states that have an exemption from national Democratic rules on timing. Generally, national Democratic rules forbid delegates to be selected before February, but South Carolina, Nevada, New Hampshire and Iowa are exempt from the national rule.