Sen. Rand Paul (R-Ky.) is heading to Iowa, the latest sign the Tea Party favorite is seriously weighing a presidential bid.

Paul will keynote the Iowa Republican Party’s annual Lincoln Day Dinner on May 10 in Cedar Rapids, the state party announced Tuesday. The event is a regular stopping point for potential presidential aspirants who have an eye on Iowa’s first-in-the-nation caucuses.

The Kentucky senator has been on a hot streak the last few weeks, beginning with his 13-hour filibuster of President Obama’s nomination to head the CIA because of the administration’s drone policy. He also won the Conservative Political Action Committee’s straw poll last weekend after giving a well-received speech at the conservative confab, a victory he called “invigorating.”