Gerstein said the superdelegate movement could give “cover”

in turn:as a result of something 导致.结果.
in turn,forcing the race to an end before June 3,
结果迫使初选在六月3日前结束.
example #1
Interest rates were cut and,in turn,share prices rose.
example #2
Interest rates were cut and,in turn,the rate of inflation increased.
It looks like Obama will win.
Note:本人已在海外生活了数十载.你放心使用吧.如有任何问题,可补而述之.

adv.依次，轮流。

in turn反过来,转而
有那个意思.
All theories originate from practice and in turn serve practice.
任何理论都来源于实践，转而又为实践服务
Clinton will win!!!