Gronstal says he won't allow gay marriage vote

(AP) - Despite big Republican gains in the Legislature, a Democratic leader says he will block any effort to refer a constitutional amendment to voters that would ban gay marriage.

Senate Majority Leader Michael Gronstal told The Des Moines Register on Wednesday that the easy political move would be to allow the vote, but that would violate his principles.

To amend the Iowa Constitution, a measure must gain the approval of legislatures formed in consecutive elections, then be approved by voters.

Republicans have pushed hard to begin that process but Gronstal and other Democrats have blocked any votes.

The GOP will be in position to exert more power in this session, with Republicans controlling the House and possibly sharing leadership in the Senate.