It's not true that Zell was a lefty before 9/11. Even before 9/11, he was a moderate to conservative Democrat.
As Governor of Georgia, he never raised taxes and cut them several times. He also stood up to public employees unions more then once. He was a moderate on social issues.
When he got to the Senate, he co-sponsored Bush's tax cuts, voted to affirm Ted Olson for Solicitor General and voted for John Ashcroft for Attorney General, all of this before 9/11.
Anyhow, he certainly wasn't as Conservative as he became after 9/11, but he was no 'good little lefty'.
He told Pat Robertson and Hannity that he became a Christian.
In 1991, when Sen. John Heinz, R-PA, died in an airplane crash, Democratic Governor Bob Casey, Sr. replaced him with Democrat, Harris Wofford.
It was interesting that Republicans were starting to pressure Gov. Casey to appoint John Heinz's wife, Teresa Heinz (now Teresa Heinz-Kerry), but she said no.
The real question is when do governors ever appoint someone not of thier own party to fill a vacated Senatorial seat?