One drawback of the "winner-take-all" system of elections in the United States is that third parties find it hard to compete with the two major parties.

In the United States, the "winner-take-all" system, also known as first-past-the-post, means that the candidate who receives the most votes in a particular electoral contest wins the election, and therefore all the delegates or electoral votes associated with that contest. This system tends to favor the two major parties—typically the Democratic and Republican parties—because it discourages voters from supporting third-party candidates.

As a result, voters may feel compelled to vote for one of the two dominant parties due to the fear of "wasting" their vote on a candidate who is unlikely to win. This perception reinforces the two-party dominance since third parties struggle to gain visibility and support in a system that does not reward them for their votes. Additionally, the lack of proportional representation means that even if a third-party candidate receives a significant percentage of votes, they may not obtain any representation in the elected body, further diminishing incentives for voters to support those candidates. Thus, the statement is true, as the "winner-take-all" system indeed creates significant barriers for third parties to successfully compete in elections.