A mailer circulating in the 63rd Senate District paid for by the Independent Democratic Conference’s political action committee touts Democratic candidate Betty Jean Grant’s primary campaign against Sen. Tim Kennedy.

The mailer highlights this month’s endorsement of Grant by Erie County Executive Mark Poloncarz, including a photo of the two shaking hands.

“Betty Jean Grant is the Senate I need in Albany,” the mailer quotes Poloncarz as saying.

The mailer isn’t the only sign of involvement for the IDC in western New York.

Campaign filings show the IDC’s PAC has contributed $25,000 to the Erie County Democratic housekeeping account.

The mailer comes after the five-member IDC and the mainline conference agreed to form a new coalition in the state Senate after Election Day, essentially ending the leadership pact between the breakaway Democrats and the Senate Republicans.

As a result, Democrats publicly said they would yank support from primary challengers, including Oliver Koppell, a former city councilman and attorney general, who faces IDC Leader Jeff Klein.

Similarly, Klein pulled support for Fernando Cabrera, who is challenging Bronx Sen. Gustavo Rivera.

Still, a number of proxy battles between the IDC and mainline conference continued on.

Sen. Liz Krueger contributed $3,500 to Koppell’s effort in July, as part of her continuation of support for him in that race.

Grant has not said whether she plans to join the IDC if she is elected to the state Senate.

The Grant-Kennedy primary has created a split in the Democratic party in Erie County and, as Capital reported this morning, the incumbent has the crucial backing the statewide teachers union in the race.