LOL, if providing basic services to the poor in his country is "buying votes," then I give him nothing but kudos and would encourage him to keep buying.
No, he literally buys votes. Here is an example (in Spanish, just Google Translate it if you can't read Spanish). http://www.cronica.com.mx/nota.php?idc=227252 He also gives people money for votes and buses them to the voting booth.
Based on the Google Translated version of that document, your allegation just isn't supported. I didn't see anyplace in the article where it said that Chavez pays people for votes, nor even busses them to the polls. I don't think the article means what you think it means.
