South Carolina primary: This chart shows Trump’s lead over Haley heading into Saturday’s vote

Voters in South Carolina’s Republican presidential primary are in the spotlight this week, as they’re due to cast their ballots Saturday in the contest between former President Donald Trump and rival Nikki Haley.

While Haley is the state’s former governor, Trump is widely expected to win, given that he has a 25-point lead in South Carolina primary polls, according to a RealClearPolitics moving average of surveys. That’s shown in the chart below.