Zimbabwe: Election Bill undermines talks - Tsvangirai

The Zimbabwe government's plan to change the Constitution ahead of 2008 elections undermines efforts to broker an end to political turmoil in the African nation, the country's main opposition leader has said. President Robert Mugabe's government has proposed a Bill that would pave the way for joint presidential and parliamentary polls next year and amend the rules for electing a new president should the post become vacant before an election.