weija jiang is tracking the races. >> reporter: done alt trump supporters today waited nearly seven hours to see him in hagerstown, maryland. >> i have spent the least and i'm number one. wouldn't you rather have that for the president than somebody that just. >> reporter: trump is expected to perform well in all five states voting on tuesday. the latest cbs news battleground tracker shows him dominating in pennsylvania, leading by 23 points. while trump's campaign has made recent efforts to reshape his image to act more presidential, trump has defied and even mocked the idea of a trns formation. trump supporters seem okay with that. >> a lot of people, a imig crowd here. >> the eyes of the country are all on the hassier state. >> reporter: ted cruz is already focusing on the next contest, campaigning in ind ind today. point gap between him and trump before may 3rd. >> we have work to do. >> reporter: hillary clinton spent the morning visiting churches in philadelphia and the afternoon in connecticut. >> i would be so honored and humbled to have your vote on tuesday. and i want you to kno

weija jiang is tracking the races. >> reporter: donald trump supporters today waited nearly seven hourse him in hagerstown, maryland. >> i have spent the least and i'm number one. wouldn't you rather have that for the president than somebody that just. >> reporter: trump is expected to perform well in all five states voting on tuesday. the latest cbs news battleground tracker shows him dominating in pennsylvania, leading by 23 points. while trump's campaign has made recent efforts to reshape his image to act more presidential, trump has defied and even mocked the idea of a transformation. trump supporters seem okay with that. >> a lot of people, a big crowd here. >> the eyes of the country are all on the hoosier state. >> reporter: ted cruz is already focusing on the next contest, campaigning in indiana today. he's hoping to close the five point gap between him and trump before may 3rd. >> we have work to do. >> reporter: hillary clinton spent the morning visiting churches in philadelphia and the afternoon in connecticut. >> i would be so honored and tumbled to have your vote on tuesday

here's weija jiang. >> reporter: today's cover of the "new york daly news" shows bernie sanders calling hillary clinton a debate dodger issuing a statement saying the sanders campaign needs to stop with the games. over the course of the last week, we have offered three specific dates for a debate in new york, all of which the sanders campaign rejected. the sanders camp quickly responded. "the idea that they want to debate in new york on a night of the n.c.a.a. finals with syracuse in the tournament, no less, is ludicrous. >> this is a campaign of the people, by the people, and for the people. and i'm proud of that. ( cheers and applause ) >> reporter: sanders did not address the issue during an event in wisconsin, but continued hammering at clinton. >> let me say a word about some of the differences, important differences, that exist between secretary clinton and myself on some very important issues. >> reporter: less than 200 miles away, the democratic front-runner focused on her message. >> if i tell you i'll fight for you, i'll stand with you, i'll work for you, that's exactly what i

. >> axelrod: weija jiang in our washington newsroom, thank you very much. a mass grave in the recent recaptured city of palmyra. the city was under isis control for nearly a year until government forces took it back last week. at least 42 bodies were found. all had been executed. belgiums main airport, used by more than 20 million people each year, reopens tomorrow for the first time since 16 people were killed there nearly two weeks ago. 16 others died in a separate bombing in brussels' subway system. as jonathan vigliotti reports, the new security measures are extraordinary. >> reporter: brussels airport may technically be ready to reopen sunday, but the attack that rocked this transit hub will make getting back to business unusual. the departure hall where the two bombs exploded remain closed. for now, travelers will check in under two large temporary tents. new permanent security measures are also in place. among the additions, travelers'ers' least twice, including before they even enter the check-in area and again while going through security at the ga