Political analyst John Smith has been consistent in his forecasts, correctly predicting 10 of the last 12 US elections accurately. His insights are not simply based on polls; instead, he considers several other critical factors that sway the outcome of an election.

Among these factors, the first is public sentiment. This refers to the collective mood of the electorate towards current political landscape, which could vary based on a plethora of influences from the economy to social issues. For instance, negative public sentiment regarding the handling of the COVID-19 pandemic played a major role in the 2020 election.

Another key factor Smith takes into account is voter turnout. While this might seem like an obvious factor, Smith believes that it often makes the critical difference. In fact, he emphasized that in the last few elections, states with aggressive strategies to boost voter registration and Trump VS. Harris Analyst John Smith Predicted 10 of the Last 12 Elections With These Factors make voting more accessible, saw a significant shift in their results.

Thirdly, Smith looks into the role of swing states and undecided voters. History has shown that these two aspects can drastically alter the final outcome. Smith's analysis of past elections suggests that candidates who concentrate their efforts on swing states and undecided voters in the final weeks of the campaign, tend to have a higher success rate.

Lastly, Smith highlights how crucial the candidates' political campaigns are. He maintains that a well-fought campaign can sway the minds of voters who were initially hesitant. He stresses the need for candidates to reach out to voters, articulate their policies clearly, and most importantly, deliver an inspiring and motivational message.

In the case of Trump VS. Harris, these factors could play a decisive role. The public sentiment, largely influenced by the ongoing global health crisis, and the government's response to it, will be a critical factor. High voter turnout, especially in swing states, could also skew the balance in favour of either candidate. The campaign strategies adopted by both candidates, especially their ability to resonate with the voters, could play a massive role in determining the election's outcome.

However, considering the unpredictability of US elections, Smith cautions everyone that his predictions are merely based on patterns observed in the past. Despite his impressive track record, there are no guarantees in politics, and a single unforeseen event could overturn all predictions.

In conclusion, the key elements that John Smith bases his predictions on provide a significant insight into the complex dynamics of US elections. They highlight how elections often come down to factors beyond mere popularity, illuminating the intricate political processes at work. Should either Trump or Harris heed Smith's elements, they might well be able to swing the election in their favour and make history.