A Colorado Democrat in Congress who voted against a health care overhaul last year has changed her mind and says she plans to vote for a revised plan when it comes to another vote.

Rep. Betsy Markey of Fort Collins is one of the few dozen House Democrats who have been intensely pressured on the health overhaul. Markey is a first-term moderate who bucked her party and voted against the health care overhaul that came before the House in November.

In a conference call with reporters Thursday, Markey said she will support the measure. Markey was the only House Democrat from Colorado to vote no last year; two Republicans also voted no.

The House is likely to vote on the health care overhaul Sunday.