Who says politics and religion don't mix? Modern Orthodox Jews eager to capitalize and promote the campaign are selling yarmulkes that say "Lieberman 2004 President." The red, white and blue logo on a white leather kippah promotes Sen. Joseph Lieberman (D-Conn.), who announced his candidacy this month. The site, www.joebeanie.com , sells the skullcaps for $12.95 plus $4.95 for shipping and handling. The site is unaffiliated with the campaign. Just the usual entrepreneurial spirit.