MEXICO CITY (AP) - This year, for the first time, expatriate Democrats can cast their ballots on the Internet in a presidential primary for people living outside the United States. Democrats Abroad, an official branch of the party representing overseas voters, will hold its first global presidential preference primary from Feb. 5 to 12, with ex-pats selecting the candidate of their choice by Internet as well as fax, mail and in-person at polling places in more than 100 countries. Democrats Abroad is particularly proud of the online voting option - which provides a new alternative to the usual process of...