Now the championship race is more like among Bayern Munich, Union Berlin and Dortmund now.
Because the biggest gap among these teams is only three points. Union Berlin are the biggest surprise team in the season among them of course. They were even the leader previously but they lost a couple of positions due to starting a bad form. But still they made a big effort again and climbed to the second position. It looks like they are very determined to stay in this competition until the end. The championship run is just lovely in the Bundesliga now.
I think that Union Berlin is superfluous here. The only way it can stay here I see is this: Bayern and Dortmund continue their performance in the Champions League until the later stages, and Union Berlin loses to Ajax in the Europa League and completely concentrates on the Bundesliga. But even in this case, it will remain an underdog.
What will affect Bayern Munich performance in Bundesliga is too much attention in the Bundesliga. The Champions league is very important to Bayern Munich because they are already working very hard to win it and it can make them not to have much focus in Bundesliga. Their is no much gap in Bayern Munich point in Bundesliga, it will be easy for Union Berlin to over take Bayern Munich.