President Abdel-Fattah el-Sissi today submitted his nomination documents to Egypt's election commission, a day after a potentially serious challenger was arrested over criminal allegations, including forgery and incitement against the country's military. <br/><br/>El-Sissi, who is virtually certain to win March 26-28 vote, did not submit the documents in person, leaving a representative to do that. <br/><br/>Under the constitution, would-be candidates must obtain 25,000 recommendations from voters or secure the support of 20 elected lawmakers to qualify to run. Already more than 500 of Parliament's 596 lawmakers have declared their support for el-Sissi.<br/><br/>The military yesterday arrested former chief of staff and presidential hopeful Sami Annan over a slate of serious allegations. The arrest all but ended the presidential ambitions ofthe ex-general, who became the latest in a series of potential contenders who have dropped out or been driven from the<br/>presidential campaign. <br/><br/>That leaves prominent rights lawyer Khaled Ali as the only serious would-be candidate to challenge el-Sissi. But Ali's candidacy is also at risk because he was convicted in September of making an obscene hand gesture in public, and if that ruling is upheld on appeal, he will be ineligible. The next appeal hearing is scheduled for March 7. Two other presidential hopefuls besides Annan have been forced to quit the race.