races, nevada and texas. the states represent democrats best shot, nevada and its dream shot texas. first if democrats have any hope of cutting into the republican senate majority of 51/49 this fall they need to defeat senator dean heller in nevada a state hillary won by two points. helder, an incumbent faces jackie rosen, who raised over $7 million in the last three months. there she is. in a brand new nbc poll, heller has a lead over rosen. however, the most recent polls shows rosen with a two point edge. meanwhile in texas, beta