Raw ballot data from the 1999 election is available from the Cambridge Election Commission.
It is also available here in a variety of formats.
Just send e-mail to Robert@rwinters.com with your requests.
Here are some facts derived from the ballot data:

Complete 1999 Election Report - Cambridge, Massachusetts (PDF)

Distribution of #2 votes behind City Council candidates' #1 votes
PDF version of the City Council #2 distribution

Distribution of #2 votes behind School Committee candidates' #1 votes

Total ballots by rank #1 to #24 for all City Council candidates

Total ballots by rank #1 to #13 for all School Committee candidates

Instant Runoff simulation to elect one "vice-chair" of School Committee
HTML version

Instant Runoff simulation to elect one "mayor" (HTML)
Instant Runoff simulation to elect one "mayor" (PDF)

The Replacements - who would succeed each councillor
and school committee member if a seat is vacated

From the 1997 ballot data..........
Distribution of City Council #2 Votes behind the #1 votes for each of the incumbent city councillors in the 1997 City Council election.
Distribution of #2 votes for the 1997 School Committee election
Cost of Running a Campaign in Cambridge (dollars per #1 Vote in 1997 election)