WASHINGTON - After months of pledging to contest President Bush in every region of the country, Sen. John Kerry and Democrats are limiting television advertising to 14 battleground states as the fall campaign opens. The shift bumps GOP-leaning Missouri, Colorado, Arizona and several Southern states off the political playing field - at least for now - and gives Bush reason to consider moving money from some of those states to others that historically trend Democratic. Both presidential campaigns are honing their strategies now at the start of the election homestretch. That's when budgets grow tighter, forcing campaigns to pick and...