(CNN) - Sen. Barack Obama on Wednesday called Sen. Evan Bayh "one of the finest United States senators that we have," but gave no mention of what kind of vice president he thinks Bayh could be.
The Indiana senator, who introduced Obama, has been at the heart of the VP buzz. Political pundits had speculated that Obama might tap him to be No. 2 as early as this week because of their joint appearance.
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.