Westchester County Executive Rob Astorino has increased his re-election war chest to more than $2.5 million, according to a statement from his campaign. When Astorino files his required fundraising reports at the end of January, he is expected to claim at least $1,035,564 raised in the past six months, according to a statement from his campaign, which said that The Friends of Astorino account has received 1,178 donations in total with a median of about $125.