The people of Uganda are voting in an election expected to bring victory to the country's long-standing President Yoweri Museveni.
But, amid a lead-up marred by violence the opposition says it won't be deterred.
In the final days of campaigning ahead of presidential and parliamentary elections in Uganda, police fired teargas as opposition supporters marching through the capital, Kampala.
At least one person was reportedly killed, and many more injured.
It's been described as the worst violence since campaigning began three months ago.
The apparent clampdown on the opposition saw the main challenger to President Yoweri Museveni briefly detained.
It was the 30th time in as many years that Kizza Besigye has been arrested.
The leader of the Forum for Democratic Change says the authorities' intervention is a sign the vote will not be transparent, fair or free.
But, he says, it cannot derail the political process taking place in the east African nation.
"To those who think that the enthusiasm of the people of Uganda can change, will be dampened, by unleashing the type of violence that we saw, I'd like to say that it's too late. You're time is really up. The people of Uganda have made up their minds, and as they have shown you and the rest of the world -- they want change."
In this, his fourth attempt, Mr Besigye, the president's former doctor, will be one in a number of candidates seeking to replace Mr Museveni.
The 71-year-old leader is looking to secure a fifth term in office, and extend his three decades in power.
He's promising to run a more effective government, and warning against any post-election violence.
(Translated)"Those who are threatening you, anyone who tries to bring violence, you will see what we will do to him. Those who want violence should take it somewhere else, but not here in Uganda."
Yoweri Museveni came to power by force in 1986 after leading a five-year guerilla war.
He's credited with restoring economic and political stability after years of turmoil under his predecessors Idi Amin and Milton Obote.
In the time since, Uganda has become a key regional player -- militarily and economically.
This young man says he made a special effort to attend a rally for the president in Kampala.
"I've been interested in our history, I've been getting to see all our past leaders, I've been getting to see what the other candidates are promising, what is on for the president to come and what are we going to have after? I mean we may want the democracy, we are saying after 30 years but check, we have peace, do we want American democracy that is prevailing in Libya? No. People are saying 30 years but 30 years of progress am saying it's OK, that's why I left my bed early enough to come and wait for his Excellency."
In 2005 Mr Museveni changed the constitution to abolish the two-term presidential limit.
He says he needs more time to cement Uganda's economic growth but his opponents, like this man, say three decades is long enough.
"We've grown up on Museveni's regime, so now we have like people like Tanzania they have changed like four presidents, and here in Uganda, where like me, I was born in 1980, 1980. It is too long for our president to be there."
Yoweri Museveni's critics say unemployment, especially among youths, has surged under his rule and accuse him of failing to tame rampant corruption.
In addition, some say Mr Museveni should answer for serious problems occuring in state education and healthcare.
The president has dismissed criticism over alleged graft and moves to grant sweeping powers to regulate civil society groups and non-governmental organisations.
And he shrugs off any disapproval of a tough anti-homosexuality law, later overturned on a technicality.
Kampala-based political analyst, Nicholas Sengoba, meanwhile, says the President should be more concerned about his opponents' influence.
"If you have that sort of a passionate crowd following your opponent you really have to get really concerned and the campaigns for the opposition are usually not very well organised and funded, the crowds that you see are spontaneous, they go to the venues on their own so if you are an incumbent and you are injecting very serious money in terms of mobilisation and then your opponent is simply getting away with it 'free of charge' it's something to think about."
Mr Sengoba says Kizza Besigye is not the only candidate to pose a potential threat to the president.
"This an election also where one of the main pillars, somebody who has been with Museveni for 40 years, Amama Mbabazi has come into this election, there's been a fear, there was a fear that there would be a shift, a division within the NRM, it has not been very visible, but you can say that there's a fear that a certain percentage of people within NRM who believe in change but do not believe in the change that is being put across by Dr Besigye might move with Mbabazi at the polling station."
