Texas rejected at least 16,800 mail ballots in primary elections

Thousands of Texans who tried to vote by mail during this month's primary elections had their ballots tossed out, many of which were rejected because of issues that voters had in trying to comply with the state's new voting law. 

A CBS News analysis of election data has found that at least 16,800 mail ballots were rejected across 14 of the 25 counties with the most registered voters. That's about 15% of all mail ballots returned in those counties. 

The rejections came in the first major election since Texas Republicans passed a sweeping new election law, known as SB1, after months of objections from Democrats and voting rights advocates. Republican Governor Greg Abbott signed the bill last September.