just to finish on cemex, we want to buy the jam.ads, a invitation from sales force. it's already worked out pretty well. you need to be patient. leave it there, back to you guys. david: this is bloomberg. ♪ bloomberg world headquarters in midtown manhattan, i'm scarlet fu. joe: i'm joe weisenthal. tracy: i'm tracy alloway. scarlet: more with mark crumpton. trump and hillary clinton will meet at hofstra university near new york city. in recent weeks trump has climbed in the polls by learning to stay out of his own way. the new bloomberg politics survey shows clinton and trump are in a dead heat. third-partywhen candidates are included. you can watch the debate on bloomberg television beginning at 8:30 p.m. new york time. our coverage will include 30-minute predebate and postdebate coverage led by john heilemann and mark halperin, and twitter will lifestream the broadcast. presidential nominees have revealed their guests ahead of tonight's debate. guests include's a woman with cerebral palsy recently featured in a campaign ad she will

cemex andeakness -- in the middle east, or if he sees the opportunity to grab crimea, he will go forhe sees an opportunity in the baltics he might go for that. from his point of view, there are risks in a trump presidency. to some extent, be careful what you wish for. david: last question -- you have paul ryan, the speaker of the house, criticizing what donald trump said last night. this is an issue that is divisive in the republican party as well. john: yes, in a way that i am sure vladimir putin would note that such divisions don't occur in his party. this is a big thing -- national security is not something you joke about -- it is fine for me and you to joke about, but it is not great if you are leading congress or running for president, and fundamentally, it is about a split in the republican party, and the republican party has always been the hawkish, strong party. trump on the whole does back that, but with putin, he has a weak spot of some sort. vonnie: hillary clinton is convening a bunch of national security and former national security figures tomorrow, so i'm sure we will