By adding "site:.gov" to the beginning of a Google search, you've narrowed your search results to federal, state, and local government sources.
For example, to find government reports and statistics about homelessness in Michigan, you could search: site:.gov michigan homelessness.
Credo Reference is a collection of over 700 reference books that offer background information on a wide variety of subjects.
You'll be most successful if you use only one or two keywords when searching Credo Reference.
Weekly Sift -- has all of the 2016 stump speeches
Iowa Public Radio -- has stump speeches from Iowa State Fair campaign launches
Academic Search Elite -- library database that lets you narrow search results to speeches, and by year (fewer keywords will give more results)
Vital Speeches of the Day -- journal that prints important speeches
The Public Speaking and Speeches Research Guide has links to sources for speeches and fact-checking websites.