republicans are likely to attack the character and integrity of these witnesses. why? because their testimony is going to counter a lot of what republicans have outlined in that memo. you're going to have people say, yes, we were under the impression, we understood there was a quid pro quo in exchange here, or as democrats are calling it now, a bribe or extortion. i think in these hearings you're going to see democrats be very sober, try to win those undecided voters in the country. at the end of the day, this isn't a legal process, it's more of a political process. for democrats that means being sober, methodical. for republicans it means being disruptive, getting their base animated in support of the president. i think you'll see republicans being rather aggressive in their attacks against these witnesses and really trying to rev up that base which has been their strategy now for the last few years since president trump won the 2016 election. >> republicans' messaging may have shifted a bit over the last few weeks, but by and large