As Chávez himself asserted this past week, it's the “cursed Israelis” who are sponsoring his opposition in his own country.
I don't live in Venezuela, and I can't speak to the status of the opposition party, other than the fact that it's a country in which the media outlets have been taken over by the government. It's a country where the notion of free press and free speech doesn't exist as we would like it to exist with any of our allies. Any viable opposition certainly wouldn't have any staying power.
There is a sense in the country that Chávez enjoys a very small percentage of the national support, yet manages to get himself elected time and time again. No one I spoke to, from airport personnel to policemen to other religious leaders in the community, supports Chávez. Who is voting for him? How does he manage to stay elected and remain in power? I don't know. But choking the media outlets and controlling the dialogue, both internally in Venezuela and outward, is likely the means by which he does that.