I just cast 30 votes, all on answers. I then tried to vote on some questions, and was denied, with the message “Daily vote limit reached”. I thought I was allowed an additional 10 votes on questions only, after I had cast my limit of 30 votes on answers.
The additional 10 votes on questions comes into play if you've distributed your votes to questions and answers prior to the 30-vote limit, instead of just answers.
In a nutshell:
- Cast 30 votes to all answers: you get 30 votes
- Cast 30 votes to questions and answers(roughly 1 question vote for every 3 votes), you get 40.