Iran prepares for election
Read more: Polls open in Iran's presidential election
The election, to be held on Friday, June 14, will choose a successor for outgoing President Mahmoud Ahmadinejad who under the law cannot run for another term.
Read more: Iran presidential candidates come in only one flavor, but there may still be room for a surprise
Rowhani talked about easing political restrictions imposed by Iranian authorities and told crowds that rebuilding ties with Western governments is better than denouncing them as enemies.
Khamenei urged presidential candidates on Tuesday not to make concessions to appease the West, an implied rebuke to several of the candidates running in June 14 elections who said that they would focus on improving the Islamic Republic's relations with other countries.
Candidates in this week's presidential election have argued that Mahmoud Ahmadinejad's "mismanagement" is largely responsible for Iran's severe economic crisis. They have accused the outgoing leader of squandering the country's oil wealth.
Candidates in this week's presidential election have argued that Iran's outgoing president Mahmoud Ahmadinejad's "mismanagement" is largely responsible for the country's severe economic crisis.
Rowhani says he will reset Iran's economy and will reverse President Mahmoud Ahmadinejad's foreign policy directions if elected.
Gharazi had said he will not campaign for election, arguing that his executive experience in the regime is enough to run the country as president.
Banners of the supreme leader Ayatollah Ali Khamenei, right, and the late spiritual leader Ayatollah Khomeini, hang in the background.
On Tuesday, Aref withdrew his candidacy, putting his support behind another centrist candidate, Hasan Rowhani.
Read more:Iran pro-reform candidate Mohammad Reza Aref withdraws from election to boost centrist's campaign