During the 2000 South Carolina Republican primary, George W. Bush supporters telephoned conservative white voters to ask if they would be more or less likely to vote for John McCain if they knew he had fathered an illegitimate black child. This was an example of a .a. push poll. b. bandwagon poll. c. saliency illusion. d. nonresponse bias.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.