Vermont Senator Bernie Sanders' commanding Nevada caucus victory made him a top target for his Democratic rivals and a growing source of anxiety for establishment Democrats worried that the nomination of an avowed democratic socialist could cost the party in November. At a rally at the University of Houston, Sanders said people overestimate how conservative Texas really is. Sanders' win solidified his front-runner status in the crowded field as the race turned to Saturday's presidential primary in South Carolina, where his moderate opponents scrambled to try to blunt the senator's momentum. Speaking with reporters, Joe Biden says Bernie Sanders may be the frontrunner, but it is about electability.

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