Results of large cities

[ag]

The Duval data by precinct are on their webpage. Unfortunately, I couldn't find the most recent description of which precincts serve what. So, assuming there wasn't recently any change in precincts and assuming no precincts serve both parts of Jacksonville and parts of the micro suburbs, I just subtracted the results for the precincts that have recently participated in local elections in these suburbs. So, with those two assumptions in mind, we get the following:

City of Jacksonville

McCain Palin 200,675 votes (50.18%)
Obama/Biden 195,900 votes (48.99%)

McCain did win Jacksonville

[ag]

Can anyone find numbers for cities in Texas?

That's hard: municipal and county governments are not too closely related. One would have to comb precinct-by-precinct data in many counties. Still, given that both Harris County (bulk of Houston) and Dallas county (bulk of Dallas) voted for Obama (the latter by a good margin), he must have won those. Fort Worth is harder to figure out. Travis county (Austin) is, of course, Obama, as are Bexar (San Antonio) and El Paso. Getting the actual numbers would require hard work