iPoll (Ropers)
Easy to use, plus, iPoll has a more robust search options, download options, and source information than some other databases. You can make your own individual online storage folder and authenticate usingUGA's single sign-on page (SSO), which gives you one less password to memorize or store.
Statista
If a poll is covered in Statista, you may be able to link to sources, and original published reports. Most Statista polls will download to PDF, Excel, or image formats.Search strategy is bit more important. You may want to search by topic rather than by "opinion poll." Be sure to use the limits on the right side of the page. The Location limit is especially useful when you want to focus on the US.
Health Poll Database
This is a component of Roper's iPoll, focusing on Health topics. The section will open on concept mapping, allowing you to explore terms and connectedness of topics.
Polling the Nations
Quick and easy to use, PtN lets you find specific polling questions, with results. It will list some basics about the poll, such as the format (ex: phone) and the source. You can link to the larger poll to see the full context. You may not be able to link to the source, or get detailed information about how the poll was conducted. You can share links to the polling information, but it does not download to PDF, Excel, or image formats.