Long Term Growth In Support for Legalization shows that older cohorts are slow to change views on marijuana legalization, while younger baby boomers are becoming more supportive. Poll results from California Proposition 19 in 2010 found nearly half of California voters still supported legalization. Support may have been higher in a presidential election year with higher turnout. Colorado polls show increasing support for medical marijuana ballot measures over time, but rejection of a 2006 legalization initiative. Public education aims to shift voter opinion by 5-10 points in key states to reach the threshold of 60% support needed to pass marijuana reform initiatives.