( CNN ) -- The question is starting to feel a little old : Whom will Barack Obama pick as his vice president ? Sen. Barack Obama has a big event scheduled Saturday . Will his No . 2 man ( or woman ) be by his side ? With the clock ticking ( the Democratic VP candidate delivers a big speech next Wednesday ) the announcement is at most days and at least a few hours away . Everyday seems to be `` the day , '' the day the guessing game will finally end . In a poke at all of the VP buzz , the Obama campaign sent an e-mail to reporters Wednesday with the subject line `` Vice presidential ... '' The first line of the e-mail : `` Just kidding . '' The e-mail contained details about Obama 's schedule with no mention of any of the potential vice presidential candidates . But if the top contenders have any inside information , they 're doing a good job of keeping quiet . Sen. Joe Biden told reporters camped outside his Delaware home Tuesday that it 's not him . `` You got better things to do , guys ; I 'm not the guy , '' he said . Asked where he would be Saturday -- when Obama is reportedly scheduled to hold a campaign event in Springfield , Illinois , that may feature his new running mate -- Biden replied , `` here , '' pointing to his driveway . He softened up a little later that night , telling reporters , `` I promise you , I do n't know anything . '' Along with Biden , Sen. Evan Bayh of Indiana and Virginia Gov . Tim Kaine are considered to be among the top tier of VP contenders . Watch the latest on Obama 's VP selection » . Bayh has managed to stay out of the spotlight this week . Does that mean he 's dodging the question ? He hit the Sunday talk show circuit this weekend and tried out the attack dog role , criticizing Republican John McCain for his stance on Georgia , Iraq and national security . When asked about the veepstakes , the former governor said he had `` nothing to report today . '' Kaine , on the other hand , seems to have no qualms about taking the main stage this week . A relative newcomer to national politics , Kaine is scheduled to appear alongside Obama on Thursday as the presumptive Democratic nominee campaigns in central Virginia . Could he be introduced as Obama 's No . 2 man ? The pair will host an invitation-only town hall meeting Thursday in Chesterfield County , a suburb of Richmond . Kaine 's sturdy performance in the traditionally conservative Richmond suburbs helped vault him to the governorship in 2005 . Obama has stops scheduled in Virginia on Wednesday and Thursday before returning home to Illinois for the Springfield event , which takes place where he first kicked off his presidential run . The event marks the beginning of a tour of battleground states leading into next week 's convention in Denver , Colorado . The Obama campaign has kept the details on both the timing and selection of the running mate under wraps . They would neither confirm or deny whether Obama would appear with his VP candidate this weekend . iReport.com : Whom do you think Obama should pick ? Although the focus in recent days has been on Bayh , Biden and Kaine , there are quite a few other serious contenders , and a curveball pick could always be in the works . Other big names thought to be in the running include retired Gen. Wesley Clark , New York Sen. Hillary Clinton , Connecticut Sen. Chris Dodd , Texas Rep. Chet Edwards , Nebraska Sen. Chuck Hagel , Virginia Gov . Tim Kaine , former Georgia Sen. Sam Nunn , Rhode Island Sen. Jack Reed , New Mexico Gov . Bill Richardson and Kansas Gov . Kathleen Sebelius . Obama 's campaign says that when he makes up his mind , he 'll send a text message and e-mail to his supporters to let them know who his sidekick will be .
Democratic VP candidate gives big speech next Wednesday at convention . Barack Obama 's campaign sends e-mail with subject : `` Vice presidential ... '' Evan Bayh , Joe Biden , Tim Kaine considered top tier contenders . Obama has big campaign event Saturday ; VP pick could join him .