Allard is a Protestant who has identified himself as an Evangelical Christian for over 25 years.
Proyor's official congressional bio does not specify which church or denomination he belongs to. Pryor's official congressional bio lists his religious affiliation simply as "Christian." It is not clear whether Pryor means by this that he is a member of one of the Stone-Campbell religious bodies such as the "Christian Church and Churches of Christ," whose members frequently identify themselves only as "Christian," or if he was using the word in a more generic sense. Most Evangelical Christians serving in congress have no reservations about identifying their denominational affiliation.
From: Paul Barton, "Pryor sees rash use of religion by groups" in Arkansas Democrat-Gazette, 21 April 2005 (http://www.nwanews.com/story.php?paper=adg§ion=National&storyid=114091; viewed 4 November 2005):
Sen. Mark Pryor lashed out Wednesday at the Christian evangelicals who have joined the attack on Democratic filibusters of President Bush's judicial nominees. Their tactics threaten "to make the followers of Jesus Christ just another special-interest group," Pryor said in a conference call with Arkansas reporters. "It is presumptuous of them to think that they represent all Christians in America, even to say they represent all evangelical Christians," added Pryor, 42, a first-term Democrat who has considered himself an evangelical Christian for 25 years. The term generally refers to members of conservative Christian denominations who believe that proselytizing is an essential part of the religious experience.