WASHINGTON (AP) – Donald Trump is attacking Florida Sen. Marco Rubio on his home turf in a new television advertisement, the Trump campaign says.

A minute-long version of the Trump ad concludes, “Marco Rubio: Another corrupt, all-talk, no-action politician.”

The new commercial is airing as Rubio, the state’s freshman senator, is expected to arrive in his home state and stay for a heavy schedule of campaigning. Rubio considers Florida a must-win contest and has trailed Trump in some recent polls. The Florida primary is March 15, and early voting has been underway for weeks.

Trump has hit Rubio for missing Senate votes and lately has called for him to drop out of the race for the GOP nomination.

This is the first Trump ad to go after Rubio. Other Trump commercials have focused on Ted Cruz, including one that calls him the “worst kind of Washington insider, who just can’t be trusted.” That ad has aired mostly in South Carolina, where Trump topped Cruz, and in the Texas senator’s home state, where Cruz prevailed on Super Tuesday last week.