The freshman representative from Houston's 146th district has been in the news recently. Note the story's focus on his decision to run for office being based on his belief that the incumbent--Al Edwards--was no longer providing constituency service.
Also note the unusual nature of the district--it has a very wealthy component and a poor component--Meyerland and the Third Ward. This makes delegatory representation more difficult than a state house seat should allow. My initial speculation--unfounded--is that the district was gerrymandered by Republicans in the legislature to pack in Democrats.