To clear up any confusion. I found a document explaining the Hatch Act. The state's Hatch Act should be basically identical to the federal act. Endorsing candidates is allowed.
It is permissible for officers to:
Attend fundraisers, display yard signs or bumper stickers, and attend political rallies;
Give a speech or keynote address at a political fundraiser, so long as the officer is not on duty and does not solicit contributions. The invitation for the speech or address may have the officers name, but may not solicit contributions or state the officers official title;
Canvass for votes in support of or in opposition to partisan political candidates or a candidate for political party office;
Endorse or oppose a partisan political candidate in a political advertisement, broadcast, campaign literature, or similar material, so long as the officer is not on duty and not wearing a uniform, badge or insignia;