CQPolitics: Democratic leaders lobbied furiously to round up support Friday for one of their key legislative priorities as the House debated a comprehensive energy bill. With the outcome still in doubt, leaders sought out undecided members to win their votes in favor of the bill (HR 2454). The final tally is likely to be close — only a handful of Republicans were expected to support the bill, and vulnerable Democrats were still weighing their options. President Obama was lobbying for …