Republican Sen. Richard Lugar says he'll vote to confirm Elena Kagan as a Supreme Court justice.

The Indiana Republican is the second in the GOP to announce he's breaking with his party to back President Barack Obama's nominee to succeed retired Justice John Paul Stevens.

Lugar says he's carefully followed Kagan's confirmation hearing testimony and the debate about her nomination, including recommendations from his constituents, and concluded that she is clearly qualified to serve on the high court.

Democrats have more than enough votes to confirm Kagan. Sen. Lindsey Graham of South Carolina on Tuesday became the first Republican to say he'll join them. A few others are expected to follow suit.