Do they have any other activities through out the years between the pres elections. Like do they have meetings or something? I am just curious to know what they do or are they just voting blocs every four years.
Pretty sure the Democrats Abroad have a pretty robust organization (http://www.democratsabroad.org/). Republicans Abroad (http://www.republicansabroad.org/) tends to focus more on GOTV among active military personnel.
As I recall, the main distinction is that Democrats Abroad sends a delegate to the DNC while Republicans Abroad does not send a delegate to the RNC.