From Chaos: A History of the 1996 Presidential Election -
The time from mid-March until the party conventions in August were relatively uneventful, especial compared to what came later. It was too early for the public to pay that much attention to the race, and they were experiencing news fatigue anyways after the Republican primary and the excitement of Powell's entry. Nevertheless, many important events transpired during this time.
Perhaps the most important of these events was Powell's decision to pick Ohio Governor George Voinovich as his running mate. The campaign had hoped to pick a moderate Democrat for the VP slot, but all of the top choices were uninterested. The search then turned to independent and Republican candidates. Voinovich meet many of the campaign's wish items: he was a moderate (or could be presented as one), had solid economic credentials as the man who had turned around Ohio's economy, hadn't taken any real positions on a variety of national issues which left room for maneuver open, and had government, but non-D.C, experience. Of course, being a popular governor of a key state didn't hurt…
It appears that it was during this team that Perot was convinced by advisors that with Powell in the race there was no room for another independent candidate…
Aggregate Presidential Poll 08/01/96
Clinton: 35%
Powell: 30%
Dole: 26%
Undecided/Other: 9%
From the autobiography of Dick Morris -
… Voinovich wasn't a perfect pick of course, there were a few problems. His positions were generally acceptable, but he had taken an anti-abortion stance in the past. We were able to modify this to supporting abortion rights with reasonable restrictions, which of course was the line Powell was taking.
I'm a believer though that the Vive-President pick doesn't matter much as long as he doesn't make any big mistakes. We hoped he could deliver Ohio though…
Powell had dropped in the polls as his honeymoon period ended and the public realized he was a real person and not some sort of political messiah. This was only to be expected, and we launched our "leader with vision and integrity" campaign in hopes of making ground back up.
I was also taking a long look at the electoral map. We really needed to win some big states. Winning the eight largest states (California, New York, Texas, Florida, Pennsylvania, Illinois, Ohio, and Michigan) would get us to 228 electoral votes and almost to the majority. This fit well with our mass-media strength, raising money had been no problem, but local level organization was still lagging. We deiced to focus then on the largest states, California in particular was absolutely critical…