DALLAS (Reuters) - Republican evangelicals are not the only political base vice presidential pick Sarah Palin is energizing. Democratic foot soldiers have sprung into action in response to John McCain's running-mate's personal attacks on their candidate, Barack Obama, her opposition to abortion rights and her endorsement from religious conservatives. "When Palin's radical and extremist views are combined with her inexperience and questionable record, it makes for an energizing brew more potent than Red Bull," said Colorado Democratic leader Pat Waak, referring to the caffeinated energy drink. Palin's impact on the left was seen almost immediately after her rousing speech last...