WASHINGTON (MarketWatch) — Talk about unwelcome company.

As Texas Sen. Ted Cruz announced his bid for the White House on Monday, there was some very noticeable opposition in the audience at Liberty University in Virginia. Screen shots of the announcement by Cruz, a Republican senator from Texas, clearly show people wearing “Stand with Rand” T-shirts — a reference to fellow GOP Sen. Rand Paul, who’s expected to announce his own bid for the Republican presidential nomination next month.

The T-shirts no doubt weren’t what Cruz wanted as a lasting image of his announcement. But they point to what’s likely to be a longer battle between the two men. As The Wall Street Journal writes, Cruz and Paul have been vying for support from tea-party activists and social conservatives. With Cruz announcing his run Monday, and Paul expected to soon, that battle will only intensify in the months ahead.

Neither Cruz nor Paul, meanwhile, has registered double-digit support in the most recent RealClearPolitics average of polls. Former Florida Gov. Jeb Bush and current Wisconsin Gov. Scott Walker are tied for first place in the latest average of polls, through March 15.