(CNN) -- Barack Obama on Wednesday is campaigning in Indiana with Evan Bayh, a Democratic senator who's been at the heart of the VP buzz.
Sen. Barack Obama is pushing his energy plan at an event with Indiana Sen. Evan Bayh.
Bayh will introduce Obama at the town hall in Elkhart, where Obama will push the energy plan he unveiled earlier this week.
Obama and John McCain, the presumptive Republican nominee, have been trading jabs over each other's energy policies all week.
Their back-and-forths have focused on offshore drilling, which McCain supports and Obama does not.
Obama on Wednesday will reiterate his call to tap into the strategic oil reserves in order to reduce gas prices. He'll also detail his proposal to eliminate the need for oil from the Middle East and Venezuela within 10 years, and he'll push for a windfall profits tax on big oil corporations that would be used to provide a $1,000 rebate to people struggling with high energy costs. Watch Obama describe his energy plan »
Bayh, a former two-term governor of Indiana, was a big supporter of Hillary Clinton during the primaries. Advocates of an Obama-Bayh ticket say he'd help unify the party and could shore up some of Obama's weak spots because of his time on the Senate Intelligence and Armed Services Committees.
"Evan Bayh is not the kind of person to make mistakes. He is loyal; he's trustworthy; he's smart; he looks terrific in a photo op," said Stu Rothenberg of the Rothenberg Political Report.
According to CNN's polling, Indiana and its 11 electoral votes are leaning toward Obama, but the senator from Illinois has not locked in the state.
Bayh tried to downplay the idea that Obama would need him in order to come out on top in Indiana, telling CNN that Obama is competitive in Indiana because of "what he stands for, who he is and the desperate need for change and a better direction in Washington."
Later Wednesday, Michelle Obama will team up with Virginia Gov. Tim Kaine for a fundraiser in Norfolk. Kaine is also considered a strong running mate candidate.
He was the first governor to endorse Obama outside Illinois, when most of the Democratic establishment was still supporting Clinton.
McCain on Wednesday starts his day in West Virginia, where he'll drop by Marshall University's football team practice. Watch McCain slam Obama on energy »
He'll then head to Ohio, a battleground state with 20 electoral votes. McCain will tour a factory in Jackson and wrap up day with an event in Chillicothe and a fundraiser in Dublin.
McCain has been stressing his "maverick" reputation as he tries to distance himself from the Bush administration. Obama has tried to paint McCain as "more of the same" on everything from energy to the war in Iraq to the economy.
McCain's emphasizes his independence in his latest television ad, telling voters the nation is "worse off than we were four years ago."
"Washington's broken. John McCain knows it. We're worse off than we were four years ago," the announcer says in the 30-second spot.
"Only McCain has taken on Big Tobacco, drug companies, fought corruption in both parties. He'll reform Wall Street, battle Big Oil, make America prosper again. "
"He's the original maverick. One is ready to lead -- McCain."
The Obama campaign issued an ad in response that asks if McCain is the "original maverick? Or just more of the same?"
The ad flashes to a video clip of McCain in May of 2003 saying he and President Bush are lockstep on most issues.
According to CNN's latest poll of polls, Obama holds a 5-point lead over McCain, 48-43 percent.
The poll of polls consists of four surveys: CNN/Opinion Research Corporation (July 27-29), AP-IPSOS (July 31-August 4), USA Today/Gallup (July 25-27), and Gallup tracking (August 2-4).
YAY!!!

