Transcript for Female candidates win big in primaries in 4 states

To politics and the results of last night's primary battles in four states. Women candidates, the big winners last night in races that will shape control of congress. Mary Bruce is on capitol hill with all the latest. Good morning, Mary. Reporter: Good morning, George. Well, this was a huge for female candidates. Look, if Democrats stand a chance of taking back the house, then Pennsylvania is going to be key and last night democratic voters there showed they can turn out high numbers and that some of those women are poised to make history. Overnight, the pink wave rolled through Pennsylvania, women showing their strength in nearly every corner of the state. A lot of them are mothers and they care about the average person and their household and the things that matter to the families in America. Reporter: At least seven democratic female candidates scoring victories in a state that currently has no female representatives in Washington. I hope very much to be one O many people who break that trend. Reporter: Chrissy Houlihan, veteran and small business owner says it's time for women to step up. I think they're qualified to be those collaborators and unifiers. Reporter: In identify hough state representative Paulette Jordan winning the democratic primary for governor. Idaho is needing Reporter: She is poised to make history and could be the country's first native American female governor. But president trump's presence still felt. We have a big election in November. One more to go. Reporter: In the keystone state trump's close ally congressman Lou barletta coming out on top in his race for senate. Now, many of these races are a big test for president trump. The president, of course, narrowly won Pennsylvania in 2016. Now Republicans are hoping for a do-over there come November while Democrats see the state as a chance to pick up several seats and propel them to retaking the house. George. Okay, Mary Bruce, thanks very much.

This transcript has been automatically generated and may not be 100% accurate.