In honor of today's kickoff of early voting — a two-week period in which political junkies, committed activists and other go-to-the-head-of-the-class types will line up to cast ballots for their favorite candidates, unable to contain their enthusiasm or anger until March 2 — we present five different installments in our Primary Color series. Brandi Grissom reports on the GOP face-off to take on state Rep. Joe Moody, D-El Paso, in House District 78. Elise Hu tackles the four-way scrum between Republicans in HD-20 hoping to succeed retiring state Rep. Dan Gattis, R-Georgetown. Ross Ramsey asks why a perenially safe incumbent, state Rep. Vicki Truitt, R-Keller, has a fight on her hands this year in HD-98. Abby Rapoport looks at the battle for conservative cred in the race for the District 5 seat on the State Board of Education. And Morgan Smith picks apart the five-way race for the GOP nomination in Congressional District 23 — and the chance to topple U.S. Rep. Ciro Rodriguez, D-San Antonio.