Twenty-second Amendment to the United States Constitution
As worded, the primary focus of the 22nd Amendment is on limiting individuals twice elected to the presidency from being elected again. Due to this, several issues could be raised regarding the amendment's meaning and application, especially in relation to the 12th Amendment, ratified in 1804, which states, "But no person constitutionally ineligible to the office of President shall be eligible to that of Vice-President of the United States". While it is clear that under the 12th Amendment the original constitutional qualifications of age, citizenship, and residency apply to both the president and vice president, it is unclear whether someone who is ineligible to be elected president could be elected vice president. Because of this apparent ambiguity, there may be a loophole in the 22nd Amendment whereby a two-term former-president could be elected vice president and then succeed to the presidency as a result of the incumbent's death, resignation, or removal from office (or even succeed to the presidency from some other stated office in the presidential line of succession).
1796 United States presidential election
With the retirement of Washington after two terms, both parties sought the presidency for the first time. Before the ratification of the 12th Amendment in 1804, each elector was to vote for two persons, but was not able to indicate which vote was for president and which was for vice president. Instead, the recipient of the most electoral votes would become president and the runner-up vice president. As a result, both parties ran multiple candidates for president, in hopes of keeping one of their opponents from being the runner-up. These candidates were the equivalent of modern-day running mates, but under the law they were all candidates for president. Thus, both Adams and Jefferson were technically opposed by several members of their own parties. The plan was for one of the electors to cast a vote for the main party nominee (Adams or Jefferson) and a candidate besides the primary running mate, thus ensuring that the main nominee would have one more vote than his running mate.