Which of the following contributed to Richard Nixons victory in the 1968 presidential election?

Nixon did not strongly align himself with the Great Society, which was a series of domestic programs initiated by Johnson aimed at eliminating poverty and racial injustice. Instead, he criticized certain aspects of these programs, claiming they were not effective, which does not support the notion that they contributed to his election victory.

The New Frontier was primarily associated with Kennedy's vision for America, focusing on civil rights, education, and space exploration. Nixon did not run on a platform that promised to continue these initiatives; rather, he sought to establish his own distinct approach to governance, which did not include a pledge to continue Kennedy's programs.

While Nixon did have some appeal among younger voters, his primary base of support came from older, more conservative demographics. Young voters were often more aligned with countercultural movements and anti-establishment sentiments, which did not favor Nixon as strongly as the Silent Majority did.

Nixon’s future diplomatic initiatives with China became significant later in his presidency, but they were not a key factor in his 1968 election victory. His focus during the campaign was more on domestic issues and appealing to the Silent Majority than on foreign policy initiatives.