This photo taken Oct. 15, 2012 shows Cristina Aguilar, right, talking to a fellow Culinary Union member while canvassing neighborhoods for the Obama campaign, in Las Vegas. Aguilar, who

 

              This photo taken Oct. 15, 2012 shows Cristina Aguilar, right, talking to a fellow Culinary Union member while canvassing neighborhoods for the Obama campaign, in Las Vegas. Aguilar, who
This photo taken Oct. 15, 2012 shows Cristina Aguilar, right, talking to a fellow Culinary Union member while canvassing neighborhoods for the Obama campaign, in Las Vegas. Aguilar, who works on an on-call basis as a hostess for the Circus Circus Casino buffet, and others like her have turned what was once a reliably conservative, largely-rural state into a key political battleground and a test case for whether Republicans can succeed without the support of a rapidly-growing Hispanic population.(AP Photo/Julie Jacobson)