Locations here - PDF.
Some local endorsements for Harris County here.
It is better to vote today - Tuesday could be very crowded.
Warning, if you have not voted in several years you have been removed from the voting rolls by the Republican purge voter effort. Ask for a provisional ballot if you were last registered in Harris County. They will not offer you one. Ask for one if you are a citizen who has registered in Harris County. On Tuesday you must be at your right precinct for your vote to count. Today is the last day to vote anywhere in Harris County for Harris County residents.