Gun control backers struggle to win some Dems

WASHINGTON (AP) — It would seem a lobbyist’s dream: rounding up votes for a proposal backed by more than 8 in 10 people in polls. Yet gun control supporters are struggling to win over moderate Democrats in their drive to push expanded background checks for firearms purchasers through the Senate next month.

Backed by a $12 million TV advertising campaign financed by New York Mayor Michael Bloomberg, gun control groups scheduled rallies around the country Thursday aimed at pressuring senators to back the effort. President Barack Obama was meeting at the White House with gun violence victi...