it took succeeded rafael nadel to dp it's his 19th grand slam win overall.e's within one championship of tying roger federer. levin. >> i want to read another couple sentences for something you wrote. in laboratory and online experiments conducted in the united states, we were able to boost the people who favored any candidate by between 37 and 63% after just one search session. the impact of doing bias rankings repeatedly over a period of weeks and months would undoubtedly be larger so this is ubiquitous and the more they do it, obviously, the more they're able to tip the scale toward one candidate or another, correct. >> yes and i have no doubt this is occurring this very moment, but without monitoring systems in place that capture ephemeral experience, there's no way to know. i'm sure right now, for example, they're having an impact on who's registering to vote. they will impact the way the primaries go. they will have a big say in who gets nominated by the democrats. they are using this power, at least that's what the whistleblowers suggest chemical usin