Thom Tillis" src="http://atr.rollcall.com/wp-content/uploads/NCPOL14_040_050514-445x296.jpg" alt="" width="445" height="296" />
Tillis and his wife Susan knock on doors in an upscale Huntersville, N.C., neighborhood north of Charlotte, the evening before the primary election. (Bill Clark/CQ Roll Call)
Primary voters head to the polls Tuesday in North Carolina, Indiana and Ohio, marking the first contests in a long series of contentious Republican battles over the next month.
In North Carolina, state Speaker Thom Tillis, Dr. Greg Brannon, and Pastor Mark Harris are vying for the GOP nomination to challenge Sen. Kay Hagan, D-N.C., in a marquee race that will help determine which party controls the Senate next year.
Further down the ballot, an American Idol runner-up hopes he’ll have better luck in a Tar Heel State House race and longtime Rep. Walter B. Jones, R-N.C., will try to avoid becoming the first incumbent to lose a primary this cycle. In Ohio, a spirited challenger — perhaps best known for parodying a Cialis commercial in his bid — will attempt to unseat Speaker John A. Boehner.
In North Carolina, the contests could drag out for months. Primaries for Senate, the 6th and 12th Districts might continue to a runoff on July 15 if no candidate receives at least 40 percent of the vote.
Here are six things to watch in those races and others on Tuesday: Full story