Why are opposition leaders under 24 hour survelience in Rwanda?

Here is a report from Al Jazeera on Rwanda’s ‘opposition crackdown’ ahead of presidential poll.

Rwandans are preparing to vote for their country’s presidential election as campaigning comes to an end.

Paul Kagame, the incumbent president and candidate for the ruling party, has gained massive popularity from both ethnic Tutsis and Hutus who recognise his leading role in boosting the country’s economy.

But more and more people are questioning his record on democracy amidst claims of a violent crackdown on opposition supporters in the run up to the election.

Al Jazeera’s Andrew Simmons reports from the capital Kigali.