Nearly 30 vulnerable House Democrats voted for a bill Wednesday to deport illegal immigrants who commit sex crimes, signaling a shift in the party’s focus on the migrant crisis as the November elections draw near.The Republican-led bill passed 266 to 158, with 51 Democrats voting with GOP lawmakers.Democratic critics of the bill have accused it of unfairly targeting illegal immigrants and “weaponizing” the issue of domestic violence. In total, 158 Democrats voted against the bill.But out of the 31 left-wing lawmakers running for re-election in competitive seats, according to the nonpartisan Cook Pol …