Go here to see the pair-ups and here to vote. The current contretemps is betwixt St. Theodulph ("All glory, laud and honour") and St. Anne ("Our God, our help in ages past"). Apparently in the first match-up Ich glaub' an Gott (which I've never heard of) beat out Diademata ("Crown Him with many crowns"), and in the second Sine nomine ("For all the saints") slaughtered Aurelia ("The Church's one foundation"). The blog where it is all talked about is The Dusty Choir Loft.