From Ottawa:
Constituent Assembly elections are scheduled to take place on November 19, 2013. Ongoing political tensions may lead to demonstrations and very disruptive general strikes (bandhs), which could occur at any time and significantly affect transportation, both domestic and international. Avoid all demonstrations and large gatherings, monitor local developments, and follow the advice of local authorities.
Although foreigners do not seem to be directly targeted for attack in Nepal, some attacks have occurred in places frequented by tourists and expatriates. Remain vigilant at all times and in all places in Nepal. In the past, violent clashes between political and ethnic groups in the Terai region resulted in several deaths and numerous injuries. The unpredictable nature of the attacks and demonstrations increases the risk.
http://travel.gc.ca/destinations/nepal?utm_source=nepal&utm_medium=travel_en&utm_campaign=mailout_links&utm_content=2013-10-29%2008:39%20am