A surge of newly registered voters has helped Democrat John Kerry regain momentum in the presidential race in Florida, where he has pulled even or just slightly ahead of President Bush, according to a statewide poll less than two weeks before the election. Kerry has rebounded in Florida and other key electoral states since falling behind Bush in the aftermath of the Republican National Convention early last month. The momentum now is shifting almost daily, however, leaving the two candidates in a statistical dead heat on their way to a suspenseful finish. The latest poll, conducted Oct. 18-21 by Research...