by Michael Mathes HOPKINSVILLE , United States (AFP) — Presidential primaries opened Tuesday in Kentucky and Oregon, giving Hillary Clinton a chance to widen her almost insurmountable delegate lead over Democratic rival Bernie Sanders who has vowed to slog on despite long odds. Though Clinton holds a slim poll lead, Sanders was gunning for victory in Kentucky, the Bluegrass State, building on his win last week in neighboring West Virginia as he battles to keep […]