SPRINGFIELD, Ill. - At one point during last week's Republican leadership gathering in Chicago, the debate over conservative activist Alan Keyes grew so contentious that journalists standing outside the closed doors heard - and reported - the shouting. The Illinois Republican State Central Committee later barred reporters from the entire floor where they were meeting to choose their party's new candidate for the U.S. Senate. But with Keyes' candidacy likely to become official Sunday, it will be much tougher for Republican leaders to hide the internal strife in their divided party. On Wednesday night the committee formally asked Keyes -...