Democrat Colin Allred is once again running for the U.S. Senate. The former congressman from Dallas announced his candidacy on Tuesday.

Allred is the first major Democrat to announce his candidacy for the seat currently held by Cornyn, but several others have indicated their interest, including Beto O’Rourke, a former El Paso congressman and statewide campaign veteran;

Colin Allred is the first notable Democratic candidate in a Senate race that is likely to garner national attention and funding.