Tariffs on particular products tend to protect the small percentage of the population that works in industries that make those products while hurting everyone else through higher costs.
Conclusion
Politicians would be more likely to be reelected if they voted against these tariffs on particular products.
Evidence
Most people oppose tariffs on particular products. These tariffs tend to protect small % of people who work in that industry while hurting everyone else through higher costs.
Evaluate
This argument is mainly making a move from "Most people oppose position X" to .
Intuitively it sounds like opposing an unpopular position would help your reelection chances, but maybe one's reelection chances hinge more on something else.
Most people support universal background checks on gun purchases and raising the minimum wage, but that doesn't mean a Republican would be more likely to be reelected by talking about gun control and minimum wage boosts.
Most people support tight restrictions on late term abortions, but that doesn't mean a Democrat would be more likely to be reelected by running on tight restrictions for late term abortions.
A Republican wouldn't run on gun control, because the vast majority of people who like gun control are Democrats and aren't going to vote for that Republican just because she agrees with them on this issue.
A Democrat wouldn't run on restricting abortions because the vast majority of people who oppose abortions are Republicans and aren't going to vote for that Democrat.
A stronger argument would say,
Since reelection basically hinges on getting more of "your voters" to turnout, it's less important whether "most voters oppose X" and more important whether .
Goal
Look for an answer offering the Missing Link of, , or look for an answer that, when negated, allows us to say that .