Colorado could become the first state to scrap its winner-take-all system of casting electoral college votes for president and replace it with one based on a percentage of the popular vote. Supporters of the Make Your Vote Count campaign filed petitions containing more than 130,000 names Friday with state election officials. "And close to 20 percent of them (the signatures) are from Republicans," said Democratic political consultant Rick Ridder, campaign spokesman. "We see this as a multi-partisan effort." The measure would go into effect immediately for this year's presidential battle if voters approve. Had it been in effect here four...