You can protect against SQL injection, but you can't make anyone read the article. The best you could do is make them click the link first.
Just like you can't make anyone read a EULA before clicking "I agree". You can force them to scroll through it, but then you sometimes end up with the comical scroll-all-the-way-down button as well. (Can't remember where I've seen that, but it's more than once.)
Ideally, you'd want the users to read and understand the article, if understandable. However, as this is difficult to implement, opening the page is a the minimum you'd have to do to understand it. If users voting on articles without reading them is a problem, requiring users to at least click on the article would lessen the problem.
Just like you can't make anyone read a EULA before clicking "I agree". You can force them to scroll through it, but then you sometimes end up with the comical scroll-all-the-way-down button as well. (Can't remember where I've seen that, but it's more than once.)