FACTBOX: What next in Zimbabwe's political crisis?

(Reuters) - Below are answers to some questions on Zimbabwe's political crisis as voters cast their ballots in an election on Friday in which President Robert Mugabe is the only candidate.

Opposition leader Morgan Tsvangirai withdrew from the run-off six days ago, saying violence by Mugabe's supporters meant it could not be fair.

WHAT HAPPENS NOW?

Voting ended with initial indications that the turnout was lower than in the first round of voting on March 29. Tsvangirai has accused Mugabe of forcing Zimbabweans to vote but said millions had not voted despite intimidation.

State television denounced foreign media reports of low turnout. It showed long queues in a semi-rural constituency close to Harare and said voters ignored MDC appeals to abstain.

Mugabe is virtually guaranteed to win the contest and the 84-year-old Zimbabwean leader would then be sworn in for another five-year term.

Tsvangirai beat Mugabe in the first round of voting, but according to official figures fell short of the outright majority needed to avoid a run-off.

WHAT HAPPENS AFTER THE ELECTION?

Zimbabwe's government says the winner of the election will be sworn in soon.

Tsvangirai has said if Mugabe goes ahead with the election and declared himself president, he would be shunned as an illegitimate leader who killed his own people.

Governing the country may be tricky for Mugabe because the opposition won control of parliament in the March 29 general election. Mugabe's ruling party has challenged some of those results. The presidency is also a powerful institution.

WHAT IS THE IMPACT ON ZIMBABWE AND SOUTHERN AFRICA?

The prospects of reversing Zimbabwe's economic meltdown are slim without a change in government. Mugabe refuses to consider reforms and Western powers are unlikely to provide the billions of dollars in development aid needed to bail out the economy.

Zimbabwe's neighbors could be swamped with an even bigger influx of refugees.

An estimated three million Zimbabweans are in South Africa, where there are rising anti-immigrant feelings. More than 60 African migrants were killed in recent attacks by mobs there.

Investors keen to invest in Zimbabwe will keep plans on hold despite a widespread belief that the once-prosperous economy could bounce back quickly under a new government.