Transcript for Young voters had low turnout in 2018 midterms

Thank you so much. Michael. Now a closer look at who voted and what motivated them to vote. ABC's chief national affairs correspondent Tom llamas is here with that. Good morning. Good morning to you. Let's take a look who voted and why using our ABC news exit polls. First up, Michael, let's talk about gender. It was historic for women but the percentage of voters who was women was one point lower than in 2016, 52% was women, 48% were men. A record number of women on the ballot and now headed to congress. The other factor we're looking at the youth vote. We heard so much bit. Just 13% of voters aged 18 to 29 participated according to the exit polls. We had seen a record number of new voter registrations and observers speculated by a record youth vote but appears we did not see that. For the last two years president trump has dominated, Michael, you know this, nearly every single political story and his party did gain seats in the senate with his help. How much did he really influence the voters. This is interesting. 26% said that supporting the president was a motivating factor. You see it right there. 38% said opposing trump was their motivating factor but a third, 33% say trump was not a factor at all. And one piece of data and this is interesting, the president is likely to jump on, the issue of the Mueller investigation into alleged Russian collusion with the trump campaign. A majority of voters, 54% say they believe Robert Mueller's probe is politically motivated. He's going to have a news conference later today. I wonder if we're going to hear about it. I'm pretty sure we will. All right, George.

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