NEW : Sarah Palin addresses crowd . Tea Party activists to hold rally Saturday in Harry Reid 's Nevada hometown . Score: 6 Former GOP VP candidate Sarah Palin to headline ` ` Showdown in Searchlight '' event .
NEW : Sarah Palin addresses crowd . Tea Party activists to hold rally Saturday in Harry Reid 's Nevada hometown . Polls suggest Senate majority leader faces tough re-election battle . Former GOP VP candidate Sarah Palin to headline `` Showdown in Searchlight '' event .