Rep. Steve StockmanStephen (Steve) Ernest StockmanSpaceX launch is step one in a new American-dominated space race McConnell must go nuclear: Abolish the legislative filibuster Ex-GOP staffer pleads guilty to fraud, money laundering on behalf of ex-lawmaker MORE (R-Texas) has largely fallen off the map since launching an underdog primary challenge to Sen. John CornynJohn CornynLawmakers feel pressure on guns Kasich’s campaign website tones down gun language after Florida shooting Murphy: Trump’s support for background check bill shows gun politics ‘shifting rapidly’ MORE (R-Texas) late last year.

According to The Associated Press, Stockman has missed 17 House votes in a row since Jan. 9, an unusual development for the lawmaker, who had missed only about a dozen major votes last year.

Notably, he skipped out on a vote on the $1.1 trillion omnibus spending bill, which he had railed against and promised to oppose on Twitter.

Stockman has been largely absent from the campaign trail, as well, since launching his bid on Dec. 9. He’s made one major public appearance back home since then, at a small gathering of Tea Party activists in Dallas on Jan. 14 — and that was after skipping a previously scheduled event.

Stockman’s absence from public life is head-scratching this close to the March 4 Republican primary, where he has little name recognition statewide and even less cash.

He entered what many expected to be an expensive contest with $163,000 in debt with only $32,000 cash on hand, up against Cornyn’s $7 million war chest.