With no clear challenge in sight, the mood around the ruling Cambodian People's Party (CPP) is festive with song and cheer as they campaign in the streets of capital Phnom Penh before the July 23 general election.

Cambodia's ruling party, headed by Prime Minister Hun Sen, has won Sunday's election in a landslide with many observers calling the process a 'sham' and pointing to the repression of dissent and opposition in the run-up to voting.