Races to watch: Congressional District 21

SAN ANTONIO – In November, U.S. representative Lamar Smith announced he would retire from congress after more than 30 years of service in the U.S. House of Representatives.

There are 22 candidates in contention for Smith's position -- 18 republicans and 4 democrats. 

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Smith, a Republican from San Antonio, has served in U.S. House of Representatives since 1987. 

Read more about this race on the Texas Tribune:

In race to replace U.S. Rep. Lamar Smith, 18 Republicans look to stand out 

TX-21 primary showcases intra-party conundrum for Texas Democrats in Trump era