As Colorado election officials began tabulating the state's massive numbers of mail-in ballots -- more than 70 percent of Coloradans voted early -- they rejected thousands of them in the Denver metro area for signature issues.
The Denver Post reported that almost 3,500 ballots had been tossed in Denver precincts and almost 2,000 in the key swing suburb of Jefferson County.
Those figures were not out of line with previous years in a state that has long embraced the postal ballot. But if swing-state Colorado is as close as the campaigns expect it to be, small numbers could make a big impact. Voters will be notified of rejections; they have eight days to verify their signatures and have their ballots counted.