1. By a margin of more that 2 to 1, both DNC members AND rank and file Democrats want the party to take a more moderate approach to issues.
"These attitudes contrast sharply with the opinions of both Democratic officials and rank-and-file Democrats. A Gallup poll of Democratic National Committee members (in February 2005) showed that, by more than two-to-one (52%-23%) the DNC members want the party to become more moderate, rather than more liberal. That view is shared by Democrats nationally; in a January survey, Gallup found that 59% of Democrats wanted the party to take a more moderate course."http://people-press.org/reports/display.php3?PageID=9332. Unmarried Women are Now a Key Element of the Democratic Base
http://www.emergingdemocraticmajorityweblog.com/donkeyrising/archives/000971.php3. The base is very conflicted on issues. Democrats get most of the black vote and the gay vote but African Americans are more strongly opposed to gay marriage on average than are white Democratic voters. The Democratic party gets the votes of Teacher's Unions based on the party's opposition to school vouchers. However, black and hispanic voters are more likely to favor school choice. Blue collar union workers vote for Democrats on average yet many of them are religions and oppose gay marriage and abortion.
The paradox of what constitutes the Democratic base is ponderous. But the notion that "the base" is the grassroots anti-war movement isn't grounded in fact.