At the moment, we are working on improving this feature. You can use the following blocks for this:
Form and button ⟶ BF913 ⟶ Polling or voting
Form and button ⟶ BF918 ⟶ Quiz (multiple choice cards, quiz results)
We also recommend you to check the templates from the “Form” category: https://tilda.cc/tpls/#fr
Also, you can add a separate element using HTML code.