Following the lead of the Republican party, the American Political Science Association is also delaying the start of its national convention by a day. From the APSA website:
Weather Alert: Hurricane Isaac
Updated: August 26, 2012 (5:20pm)*All Wednesday events CANCELLED (including Short Courses)*
In light of the projected conditions in New Orleans by hurricane Isaac, APSA is cancelling all pre-conference meeting activities on Wednesday, August 29th, including planned short courses.The official meeting will begin on Thursday, August 30, with the understanding that participants unable to attend the meeting due to flight cancellations to New Orleans will be eligible for refunds of their conference registration fees.
As we continue to monitor the storm and local conditions, APSA will announce any adjustments to the meeting schedule following the scheduled news conference by Mayor Landrieu midday on Monday.
As new information becomes available, it will be posted here and (I think) here.