Nikki Haley will not announce an endorsement of Donald Trump, but she will encourage him to win the support of Republican and independent voters who backed her. Haley's departure paves the way for Trump to focus on his likely repeat duel with Biden in November.

The former president is on track to obtain the 1,215 delegates necessary to obtaining the Republican nomination this month. Haley is expected to make a public appearance Wednesday following her Super Tuesday loss, according to people familiar with her plans. The decision will ensure Donald Trump wins the GOP nomination and faces Democratic President Joe Biden again in the elections.