Cambodian parties begin election campaign amid crackdown

By Prak Chan ThulPHNOM PENH (Reuters) - Cambodian parties on Saturday launched campaigns for June 4 local elections against the backdrop of a political crackdown by Prime Minister Hun Sen, who has vowed to stay on after more than three decades in power.Hun Sen's main rival, opposition leader Kem Sokha, held a rally with tens of thousands of supporters in the capital, Phnom Penh.The local elections next month could be a springboard for next year's general election.