Have you seen Hubdub? The site is full of surveys asking for predictions about future news items. For example, "What will be the result of Monday's Presidential Gallop Poll?" Ask students to make these kinds of predictions is fun as well as a process that requires critical thinking. You could also ask them to read the current polls and determine whether or not they agree and why.
The polls have included everything from sports to health. They've now partnered with Reuters to even further increase the scope of their coverage!!