From a polling perspective, it's a no-brainer. The issue most people identify as the country's biggest problem is also the one where they rate Chavez's performance the worst.
According to Hinterlaces' May/June 2006 poll, 87% of voters identify crime is the biggest problem in the country. 70% say crime has gotten worse under Chavez, and 24% say it's the same as it's always been.
Keller's June poll also identifies crime as the number one issue - 76% of his respondents think it's gotten worse and 15% say it's the same.
How should a savvy oppo candidate react?
By talking about very little else.